Best Internal Hard Drives

Best Internal Hard Drives

Storage is one of the cornerstones of a working computer of any kind. This is why upgrading your hard drive to a better one is quite a big deal. However, in today’s huge market of various hard disk drives (HDDs) and solid-state drives (SSDs), finding the right one is quite the daunting task.

This is why our internal hard drive buying guide exists – to help you find out what makes a great hard drive and what are the best ones out there. Our guide includes hard drives with the best price per GB ratio, combined with high transfer speeds, reliability, and positive customer reviews. Not only that, we’ve added handy tips and technicality explanations to help you understand what drive would fit your needs the best and what to expect once you buy it.

Best Internal HDD Top List

It’s very hard to determine a single best top pick amongst all internal laptop and desktop hard drives, because of their vast diversity. Some of them are manufactured for NAS, some for backup or surveillance systems.

To find the best internal hard drive, you definitely must know where you will put it and use it, which is why we built our list from what we consider to be the best 2.5-inch and 3.5-inch drives for various uses. We focused on the fastest and most reasonably priced drives for each category, so most drives on this list are 7200RPM hard drives. You’ll find all of the important specifications for all hard drives on our top list, as well as an explanation for all of those specs after the list.

How we picked the best HDDs

Customer reviews on major retailer sites represent reliability via real-life user experience rather than just numbers provided by the manufacturer. This was the first step in picking the best internal hard drives for our list as all other characteristics become irrelevant if the drive breaks a day after its warranty ends.

We also looked at Backblaze data and other similar sources to determine the most reliable brands and drives. Cloud backup companies can offer a massive amount of hard drive reliability data because they have thousands of hard drives running non-stop all the time.

We looked at various benchmarks from users and other reviewers, but our main focus was UserBenchmarks. Their benchmark results, aggregated from hundreds if not thousands of users, are more objective than separate speed measurements, and they also give us a unified platform on which to compare the drives to one another. A thing worth noting is that UserBenchmarks’ results are usually lower than those of separate benchmarks.

Best 3.5-inch Internal Hard Drives for PC and NAS

These are speeds of only one model in each respective series lineup. For example, Seagate BarraCuda has 4 more capacities available (besides the fastest 2TB model), each with its own transfer speeds.

Best all-around 3.5-inch 7200RPM HDD - Seagate BarraCuda

We’ll start with a well-rounded hard drive from Seagate’s Guardian series, that being the BarraCuda. Barracuda doesn’t excel in one particular field, like low price or high performance, but is rather a jack of all trades. The base 7200RPM version comes in 500GB, 1TB, 2TB, 3TB, and 4TB capacities, all of which feature a 64MB cache, aside from the 500GB model that has a 32MB cache. All standard models of BarraCuda come with a 2-year warranty.

Seagate BarraCuda on Amazon

When it comes to performance, the BarraCuda delivers one of the highest benchmarks amongst other 7200RPM drives. The 159-179MB/s sequential read and 153-162MB/s sequential write benchmarks (highest for 3TB model, falls off a lot for the 4TB model) from UserBenchmarks make it one of the best-performing HDD series out there. Most other benchmarks from reviewers and users come in at 150-210MB/s, which is almost as high as you can go with commercial 7200RPM drives.

The drive is also one of the cheapest 7200RPM drives, ranging between 2.9 and 4.5 cents per GB, depending on the capacity. It has nothing in terms of added software, however, the hardware and firmware parts of the drive have been optimized with various features, like multi-layer caching (optimizes data throughput) and Secure Instant Erase (increases data security for deleted data).

If you’re not looking for anything specific in your new internal hard drive, the BarraCuda is the way to go because it neatly covers all basic needs of any user. It’s pretty fast, pretty spacious, pretty reliable, and the cheapest 7200RPM drive on most retailer sites, all of which makes it the most balanced hard drive out there.

BarraCuda Pro review

Seagate Barracuda PRO on Amazon

Also worth noting is the BarraCuda Pro version, which is available in much larger capacities – 2TB, 4TB, 6TB, 8TB, as well as the largest capacity among consumer-grade drives – 10TB. The drive also comes with an extra-long 5-year warranty as well as a 2-year Rescue Data Recovery plan that will help you retrieve accidentally deleted or corrupted data (not available in all countries). Pro drives also come with larger caches, 128MB for 2TB and 4TB versions and 256MB for the rest, to be exact.

The Pro models are also supposedly faster, but UserBenchmarks shows only the 4TB and 10TB versions to be notably faster than standard BarraCudas (around 190MB/s read/write), with other capacities adding only a couple MB/s to the average base speeds. As you may have already guessed, the BarraCuda Pro drives cost a lot more than regular drives – on average $60 more than their standard counterparts and similar 7200RPM drives, or from 4 to 6.5 cents per GB.

Cheapest 3.5-inch 7200RPM HDD - Toshiba P300

Toshiba P300 on Amazon

Keeping up with modern computing technologies has become necessary in our everyday lives, but at the same time, it can be a very costly. Many of us are on a very limited budget for upgrading or rebuilding computers which makes every dollar count, so a drive such as Toshiba P300 might be the best solution for some users. First things first, this is the cheapest 7200RPM drive only on Amazon and is on par with BarraCuda on other major retailer sites, in terms of price. Still, at 2.67-4.4 cents per GB (depending on capacity), the P300 will save you at least a few dollars on an economy PC build, if you get it from the cheapest seller.

As for the P300 itself, it’s available in 500GB, 1TB, 2TB, and 3TB capacities, although the 500GB is outdated and thus overpriced. All capacities come with a 64MB cache and a 2-year warranty.

Currently, the P300 is the cheapest among the most reliable 7200RPM hard drive models on Amazon. All other retailer sites sell it for more average prices. The drive’s performance is still on par with the fastest consumer drives, achieving 150-162MB/s read and 145-163MB/s write speeds on UserBenchmarks. Other benchmarks, like the ones from KitGuru and XSReviews, range between 150 and 200MB/s, as with most 7200RPM drives.

This might not be the best drive out there, but if you need to save every penny on your new PC build, the P300 might be the way to go. It’s only slightly slower than its competition, so you don’t even lose much by potentially saving $5-$10 on it. As with most products from major manufacturers like Toshiba, the P300 is also reliable and well-received by its customer base. But if Amazon isn’t your thing, other drives might prove to be cheaper because, more often than not, the cheapest reliable 7200RPM drive on other retailer sites is the BarraCuda.

Fastest 3.5-inch gaming and performance HDD - WD Black

WD Black on Amazon

Every single component of a high-performance PC build has to be as fast as possible and of high quality, including your hard drive. When it comes to the fastest 3.5-inch hard drives, there’s only one clear leader and that is WD Black. WD Black has been the fastest consumer hard drive for many years now, with all of the updated and newer versions achieving even higher benchmarks to fit the latest speed standards.

The latest 2015/2016 iterations of the drive come in 4TB, 5TB, and 6TB capacities and reach 166-191MB/s sequential read and 171-216MB/s sequential write on UserBenchmarks, depending on capacity. Oddly enough, the separate 2015 6TB model features a higher sequential read speed (192MB/s) but a lower sequential write speed (184MB/s).

This makes the 2015 model fit more for gaming needs (it will load programs faster), while the newer 2016 model seems to be a bit more well-rounded for both input and output operations. However, the difference is minuscule and you would most likely not even notice it, so don’t overthink too much which model to buy and go for whichever one is cheaper.

The UserBenchmark platform is unforgiving, so these can be considered as one of the lowest benchmarks, which gives a better perspective to how fast these drives are. In fact, most other benchmarks have shown 220-250MB/s sequential read and 180-230MB/s sequential write for the 2015 6TB model, which is insane for a hard disk drive.

If you’re looking for smaller capacities, the 1TB, 2TB, and 3TB models from 2013 will have to do. These are more on par with average 7200RPM drives, reaching 149-160MB/s sequential read and 140-157MB/s sequential write speeds on UserBenchmarks. There’s also a 4TB model from 2013, but it is completely outperformed in every way by the newer, 2016 4TB model.

As you might imagine, all of this performance comes at a cost. WD Black drives range between 4.2-6.9 cents per GB (depending on capacity), roughly 1.5 times more than the Toshiba P300. Although expensive, it isn’t exactly overpriced as the market-leading performance is accompanied by a market-leading 5-year warranty. Overwhelmingly positive customer reports and professional reviews of these drives back up the high quality claims even more. The latest 1-3TB capacity models feature 64MB caches, while 4-6TB models feature a 128MB cache.

Overall, there is no better HDD option for high-performance gaming PCs than the WD Black drives. They might cost more but you pay for what you get, that being the highest performance in the consumer market and a 5-year warranty for added reliability. Just keep note of what models you buy so that you don’t buy a slower drive for more money.

Best 3.5-inch SSHD - Seagate FireCuda

Expensive performance HDDs like WD Black tackle your performance needs head-on, by simply doing everything quickly and having a higher price tag because of it. SSHDs, on the other hand, achieve high performance by wisely using their NAND flash memory only for the files that actually affect loading speeds and save you money on unnecessary performance. Undoubtedly, the best SSHD on the market right now is the Seagate FireCuda (not to be confused with BarraCuda).

FireCuda is available only in 1TB and 2TB capacities but those capacities come with an added 8 gigabytes of NAND flash storage for all of your performance-heavy data. This flash storage, in time, will be filled with all of the boot, configuration, and other files used in loading programs and booting your computer. It also has the regular 64MB drive bus/DRAM cache for managing data flows. FireCuda also comes with the industry-leading 5-year warranty, unique to this drive and WD Black.

SSHD performance is basically the only reason why the technology was developed, to begin with, so how fast is the FireCuda, exactly? Well, UserBenchmark shows somewhat modest 140MB/s sequential read and 169MB/s sequential write results for both 1TB and 2TB 7200RPM models, with a noteworthy random write benchmark of 4.92-5.03MB/s, but this isn’t the end of the story.

The real-life performance benefits are much harder to pin down to a single number because of the long-term buildup of the flash memory. This effect can’t be measured by benchmarking software since it uses its own, brand new data for testing the drive. In short, you can expect the mentioned speeds for rarely used documents or any new data, while frequently opened games and software, as well as your operating system, will load up a lot quicker after the FireCuda “ get used to” this software and begins storing it in its flash memory.

Ranging between 5-7.9 cents per GB (depending on capacity and retailer), the FireCuda isn’t exactly cheap, but getting the 2TB version will most likely be cheaper than WD Black 2TB and might even yield better performance on more casual gaming builds. Overall, the FireCuda is much more affordable than any SSD out there and can provide almost the same performance gains if you don’t run too many demanding programs or games that could fill up its cache.

Best 3.5-inch 5400RPM HDD - WD Blue

WD Blue on Amazon

Some of us look for superb performance in every component in our super-expensive gaming PCs, but some of us simply want a solid, cheap, and reliable hard disk drive with its speed being secondary. 5400RPM hard drives are the most common in the consumer market and Western Digital Blue drives are, in our opinion, the best 5400RPM drives.

A wide array of capacities is available for WD Blue drives – 500GB, 1TB, 2TB, 3TB, 4TB, and 6TB, although the 500GB model is almost as expensive as the 1TB one. All capacities feature a 64MB cache and a 2-year warranty. A 7200RPM 1TB model is also available, but it can hardly compete with other 7200RPM drives in terms of transfer speeds.

As we mentioned before, if you’re looking at 5400RPM drives, price and quality are prioritized over performance. However, you won’t have to sacrifice much performance with WD Blue because it’s one of the fastest 5400RPM drives out there, reaching speeds most competitors can only dream of. 130-140MB/s sequential read and 122-146MB/s sequential write speeds (UserBenchmark) are unparalleled in the market. However, the 7200RPM drive shows only 158MB/s sequential read and 145MB/s sequential write speeds, adding very little to its lower RPM counterparts.

Fortunately, most major retailers oddly sell the 5400RPM and 7200RPM 1TB WD Blue drives for the same price, making the small speed benefits of the 7200RPM drive much more appealing. That price itself is also very affordable, ranging between 3.1-5.3 cents per GB, depending on capacity.

In short, WD Blue drives are of high quality (confirmed by positive customer reviews) and don’t compromise performance too much. They aren’t as fast as 7200RPM drives, of course, but will do great for budget PC builds and more casual usage, and will save you some money by doing it, as 5400RPM drives do.

Best 3.5-inch RAID and NAS HDD - WD Red

WD Red on Amazon

HDDs are slowly but surely being outmatched in every way by SSDs, aside from price. This is why many hard drive users decide to couple them together in more secure, fast, and practical systems, some of which can even outmatch solid-state speeds. However, such Network Attached Storage (NAS) and Redundant Array of Independent Disks (RAID) systems put a lot of pressure on the hard drives, so only the sturdiest drives can be used reliably in such systems. The most reliable one, in our opinion, is WD Red.

Before we move on, the base WD Red lineup of hard drives features only 5400RPM drives. If you need quicker drives for your RAID system, we’ll discuss the 7200RPM WD Red Pro series further below. WD Red is one of the few hard drives currently (2017) available in 10TB capacity, as well as the more common 1TB, 2TB, 3TB, 4TB, 5TB (discontinued), 6TB, and 8TB capacities. The 10TB capacity comes with a 256MB cache, the 8TB models come with a 128MB cache, and all the other variants feature a 64MB cache. All drive models come with a 3-year warranty.

The data transfer speeds of these 5400RPM drives reach 126MB/s – 146MB/s sequential read and 115MB/s – 142MB/s sequential write (over 1-8TB capacities) on UserBenchmarks, with capacities over 5TB ramping up to extremely high speeds, above 130MB/s. The lower 1-5TB capacities show decent performance, while 6-8TB will push 5400RPM drive performance to its very limits.

We were able to find a couple separate benchmarks for the WD Red 10TB model, all of which reach 200MB/s read/write speeds, which is higher than what most 7200RPM drives reach. We will stay tuned for more benchmarks though since such speeds are unprecedented among 5400RPM drives.

The price per capacity of different WD Red models seems to vary a lot, seeing how the 4TB capacity is the cheapest at 3.33 cents per GB on most major retailer sites. Other capacities from 1TB to 8TB range between 6.5 and 3.41 cents per GB accordingly, while the 10TB model reaches almost 4 cents per GB, probably because of its larger cache and helium technology.

What makes WD Red drives more appropriate for NAS and RAID systems is their higher durability for constant, 24/7 workloads, as well as reduced heating and power consumption. Although WD Red drives will work just fine as your regular internal hard drive, there are multiple factors that make it work better than average in RAID systems.

Fastest and most reliable 3.5-inch RAID and NAS HDD - HGST Deskstar NAS

HGST Deskstar NAS on Amazon

When it comes to reliability and longevity, there is only one unquestionable leader among hard drive manufacturers – Hitachi Global Storage Technologies, or HGST for short. Although now a subsidiary of Western Digital, HGST keeps on creating some of the highest-quality hard drives, which is why it’s important to mention at least one in this list. While they focus more on the enterprise market, some of HGST’s products are still aimed at individual, casual users, the most notable being the Deskstar NAS drive.

Available in 4TB, 6TB, 8TB, and 10TB capacities, any Deskstar model will be a sizeable addition to your NAS system. The 3-year warranty might not be the longest but the HGST brand alone ensures quality, seeing how both customer reviews and enterprise data confirm this brand to be much more reliable than both Seagate and WD.

The Deskstar NAS drives, in particular, provide not only the HGST quality but a very impressive performance as well. Both 4TB and 6TB models reach 180-185 MB/s sequential read and 170-175 MB/s sequential write speeds, with the 10TB model achieving staggering 210-220 MB/s benchmarks (UserBenchmark). The 8TB model is slightly slower than the others but is fast nonetheless at 160/170 MB/s sequential read and write.

You’d imagine such performance to come at a high cost but Deskstar drives are actually one of the cheapest ones on the market. All capacities range between 3.15 and 3.5 cents per GB, which is very sensible, especially considering the performance and quality. However, a very important thing to note here are the many complaints about the Deskstar NAS drives being very noisy. This is why we recommend this drive for NAS usage only, seeing how the intense vibrations and loudness would be quite annoying while the drive was in a regular PC case, while most NAS enclosures are built to contain such drives to some extent.

Overall, the Deskstar NAS drives are fast, durable, and relatively cheap. However, HGST’s enterprise drive technology may have found its way into this personal desktop drive, making it much less suitable for anything but a NAS enclosure due to its noisiness. Still, if you’re able to ignore this downside, this is a very good, if not a flat-out better alternative to WD Red drives.

Best 2.5-inch Internal Hard Drives for Laptops

Best all-around 2.5-inch 7200RPM HDD - HGST Travelstar

HGST Travelstar on Amazon

Even though it’s a subsidiary of Western Digital now, HGST still manufactures one of the most reliable and most popular hard drives, including 2.5-inch laptop drives. Their Travelstar 2.5-inch hard drive has become the most popular 7200RPM laptop hard drive over the years because of multiple reasons, including reliability, speed, and price.

Although currently available only in 1TB (7k1000 model) capacity (lower capacities seem to be discontinued), this speedy drive will be spacious enough for most laptop users. Travelstar 7k1000 drives come with a 3-year warranty and a 32MB cache. It doesn’t look like much at first glance due to the limited capacity and other size-related limitations. Where this 2.5-inch drive doesn’t disappoint is transfer speeds.

More than 70’000 benchmarks of the Travelstar 7k1000 exist on UserBenchmarks, averaging out to 102-115MB/s sequential read and 102-112MB/s sequential write (for 750GB/1TB capacities accordingly). Again, this doesn’t seem like much when compared to larger drives, but these are actually one of the highest transfer speeds for consumer-grade, 7200RPM 2.5-inch drives. Aside from being one of the fastest laptop drives, the 7k1000 manages to also be one of the cheapest as it goes for 5.5-7 cents per GB, depending on the retailer.

The low price and high performance of the 7k1000 are accompanied by customer-approved durability and a decent 3-year warranty. Overall, the Travelstar combines everything you would want from a 2.5-inch hard drive, aside from capacity, in one neat package and has very few noteworthy competitors in terms of speed and price.

All-around best 2.5-inch 5400RPM HDD - Seagate BarraCuda

Seagate Barracuda on Amazon

If size is what you’re looking for, then Seagate has you covered. Same as with 3.5-inch drives, Seagate has created the largest internal drives for laptops as well, in the form of the 5400RPM 2.5-inch BarraCuda series.

These BarraCudas come in 1TB, 2TB, 3TB (discontinued), 4TB, and 5TB capacities, giving a wide range of options for various laptop and PS4 hard drive users. You can also find 500GB and 3TB models but both are more expensive per capacity and much slower than all the aforementioned capacities. All capacities feature a quite hefty 128MB cache but come with a somewhat average 2-year warranty.

As it is with 5400RPM drives, the transfer speeds of BarraCuda 2.5-inch drives are not too impressive. 104-110MB/s sequential read and 91-103MB/s sequential write performance (between the 4 capacities) will do just fine in everyday use but don’t expect lightning-fast loading times with these drives. Also, as read performance rises a bit, write performance seems to dip down to 91MB/s at higher capacities, with 1TB and 2TB models being consistently fast in both modes.

Ranging between 3.9-5 cents per GB (over different capacities), the 2.5-inch BarraCudas are also quite cheap. However, you pay for what you get because of the lower spindle and transfer speeds. Another thing worth noting is that 3TB and larger models of the BarraCuda 2.5-inch will be 15mm high, as opposed to the 7mm height for the 1-2TB capacities and many other laptop HDDs. So make sure that you have enough space in your laptop if you do decide to get a larger capacity of this drive.

Overall, size is the main characteristic of this drive, beating any competition in terms of how much space you can cram into a laptop. BarraCuda drives are also pretty cheap, making it an appealing choice for a budget upgrade, or for users who simply don’t need top-notch performance.

Fastest 2.5-inch gaming and performance HDD - WD Black

WD Black on Amazon

High transfer speeds are much easier to achieve on a PC than on a laptop because faster moving parts need more space to function freely. This makes finding fast 2.5-inch drives much harder and only a few drive models out there have managed to contain PC-worthy performance within a laptop drive bay. The quickest of them all is, yet again, WD Black.

As we discussed with previous drive models, the limited space for drive parts in a 2.5-inch drive forces you, to some extent, to choose between high capacity and high performance. This is no different with WD Black, which comes in several, small capacities – 250GB, 320GB, 500GB, 750GB, and 1TB. The 750GB model features a 16MB cache, while the remaining capacities feature a 32MB cache. Same as with the larger form factor, the 2.5-inch WD Black drives come with an industry-leading 5-year warranty.

Unlike the 3.5-inch models, the smaller WD Black drives don’t deliver super-high benchmarks and are much closer, in terms of transfer speeds, to their slower competition. 103-123MB/s sequential read and 97-117MB/s sequential write (UserBenchmark) for the larger capacities (500GB and up) is basically on par with the Travelstar. An important note with WD Black 2.5-inch drives is that you may come across the older 500GB model that has a smaller cache and is notably slower than the newer model. If you do decide to get a 500GB WD Black laptop drive, get the WD5000LPLX as opposed to the older WD5000BPKX. The LPLX is also the fastest drive in the lineup, even faster than the 1TB model.

Although more humble with performance than its larger brothers, WD Black mobile comes with a price tag as premium as its 3.5-inch counterparts. 6.9-11 cents per GB for 500GB – 1TB capacities is quite expensive, even for a 7200RPM drive. We didn’t even include the smaller capacities of WD Black since most retailers sell the 250GB and 320GB models for the same price as the newer 500GB model, resulting in prices closer to SSDs than hard drives. Note that the 750GB and 1TB models are 9.5mm thick, whilst the smaller capacities are only 7mm thick.

In short, WD Black mobile drives have a slight edge, in terms of performance, over our pick for the best 2.5-inch drive – the HGST Travelstar. Black drives also come with a lengthy 5-year warranty and have more options for smaller capacities. However, all of the pros of WD Black mobile come at a much higher price which makes us recommend the HGST Travelstar over WD’s high-performance drive. Still, if reliable warranty and every last drop of performance are important factors to you, a WD Black laptop drive will definitely not disappoint and will be a great purchase (if you have the money for it).

Best 2.5-inch SSHD - Seagate FireCuda

As small as the high-performance drive market for laptops is, it still manages to have at least one SSHD in the lineup – the Seagate FireCuda. Although generally slower than the 3.5-inch FireCudas, the 2.5-inch, 5400RPM FireCudas use the same caching methods to gradually increase the performance of the drive.

Laptop FireCuda hard drives come in 500GB, 1TB, and 2TB capacities, all of which are 7mm thick. If Amazon is anything to go by, the 1TB model has a 128MB cache while the other two capacities feature a 64MB hard drive bus. However, these are arguably irrelevant numbers because of the unique way SSHD caches work. Also included with the package is the industry-leading 5-year warranty.

100-105MB/s sequential read and 74-78MB/s sequential write results on UserBenchmarks are hardly impressive. However, same as with the 3.5-inch version, the specialized SSHD cache will improve the FireCuda’s performance over time and this effect is much harder to measure precisely.

Still, high performance right out of the box is much more valuable than some potential future estimates, especially considering the price of FireCuda drives. 4.7-10 cents per GB (between all capacities) is quite a high price tag for what is still, at its core, a 5400RPM drive. The 1TB FireCuda model, for example, costs even a tad bit more than the 1TB Travelstar (5.6 vs 5.5 cents per GB), driving home the point of potential versus actual performance.

In short, FireCuda’s 5-year warranty and the potential of a high-speed 2TB storage device for your laptop are great features. At the same time, there are cheaper alternatives for both speed and capacity on our list (Travelstar for speed, BarraCuda for capacity) that cost less than FireCuda drives. If you decide to go for a laptop SSHD, we would recommend only the 2TB FireCuda model, as it provides higher capacity than the Travelstar and higher transfer speeds than those of the BarraCuda drives, giving you the best of both worlds at the most reasonable price. The smaller capacities (500GB, 1TB) are simply outmatched by quicker 7200RPM drives that cost roughly the same.

How to buy the best internal hard drive?

Even for a non-expert in computers, it is clear that internal hard drives play a critical role in improving computers overall performance. Hard disk drives store most of your data and their main purpose is to access it based on the user`s request. By choosing a reliable and fast hard drive you can dramatically improve your system’s data transfer speeds, decrease boot and game loading times. Your computer will start up faster than before and you will forget the long loading times it took for the browser, files, or any other software to be opened.

The drives listed above are our favorites for each, respective usage. However, there are many more hard drive models out there for you to look through and choose from. Even if you do want to simply follow our recommendations, it’s important to understand what makes hard drives tick and, in turn, how to discern internal hard drives that fit your needs from ones that don’t.


At first glance, choosing the best internal hard drive may seem quite easy – just find one that costs the least per gigabyte from a reliable, well-known manufacturer and you’re done, right? While price and capacity remain the most important factors, there’s much more to hard drives than just that. There’s the form factor (2.5-inch, 3.5-inch), cache size (32MB, 64MB, for example), spindle speed (5400RPM, 7200RPM, for example), sequential read/write performance, etc.

The sheer amount of various capacities and models can be quite confusing because they are so similar to each other. For example, WD Blue HDD series features 1TB models that can feature both the regular 5400RPM, as well as the faster 7200RPM spindle speed, while all other capacities are only 5400RPM. Add to that the piles upon piles of different updated and discontinued drive models and you can see why finding the best hard drive might require a lot more effort than you signed up for.

All of this might seem overwhelming, but don’t worry as we will help you learn the basics as well as the more complex stuff regarding hard drives and their usage. Our hard drive buying guide is not only a list of the best internal HDDs but also an educational introduction into the world of hard drives via tips and technical explanations.

We will go into some basic detail as to how hard drives work, what all of their specifications mean, and how to find the best and most reliable hard drive models in the overwhelming internal HDD market. SO, let’s get started!

Choosing between SSD, SSHD, and HDD builds

In this list, we only looked at HDDs and SSHDs (closer to a hard drive than an SSD) but you could also get a solid-state drive, which stores data electronically, rather than on magnetic platters via moving parts. Seeing how getting a new storage drive is quite an investment for many people, it’s important to understand the difference between HDDs, SSHDs, and SSDs in order to not waste money on sub-optimal solutions for your computer storage.

First things first, you have to understand what are these different devices and what makes them special:

Hard Disk Drive (HDD)

As the name suggests, HDDs store data on “hard” disks, called platters. In an HDD, information is stored via magnetic forces that change the state of tiny grains within the platter’s surface, which correspond to your ones and zeroes. Imagine a vinyl record player on steroids and add a little thing called a cache, which helps transfer data to the computer and optimizes performance.

The two main criteria that set apart different types of storage are price per capacity and transfer speeds:

  • Very cheap: Being one of the oldest relevant forms of computer storage, the good old HDD is also, on average, the cheapest.
  • Slow: 110-130MB/s (5400RPM), 150-200MB/s (7200RPM) sequential read/write. Although the read/write needle moves extremely fast on the drive platters, it, and the drive platters themselves are still moving parts. This makes read/write processes a lot slower than they are with fully electronic parts.

Solid-State Hybrid Drive (SSHD)

Remember that cache thing on HDDs? SSHDs take this technology to the next level, combining HDD capacity and price with the high transfer speeds of flash memory. An SSHD is a regular HDD with an additional NAND cache for storing more frequently used data and loading that data more quickly. It’s basically a regular HDD and a tiny SSD combined into one device, with the SSD part being smart enough to hold performance-heavy loading data for often used software.

Although you’ll mainly find only Seagate SSHDs, which makes it somewhat of a company project, the difference in function between them and regular HDDs is notable enough to put SSHDs in a separate category.

  • Cheap: Since SSHDs are basically a modified hard disk drives, their prices don’t differ too much. Fancy HDDs and regular SSHDs will go for the same price.
  • Average Speed: regular HDD benchmark results but improved real-life performance over time. The large cache allows more of frequently used data to be stored in the flash memory and, in turn, to be accessed more quickly than having to read it every time from the drive’s platters. While the benchmarks don’t show it, when game and OS boot files get moved to the cache, they will be loaded much faster.

Solid-State Drive (SSD)

A completely different technology to the two previously mentioned ones is the solid-state drive, or SSD for short. SSDs store data via NAND gates and floating gate transistors, which are just fancy words for microscopic electronics. It’s basically like a super-charged USB thumb drive.

  • Very Expensive: SSDs have been around for almost a decade now and have drastically increased in size to match their hard disk competition. However, their price hasn’t dropped as much since building NAND devices is much more expensive, putting a pretty high price tag on the super-high transfer speeds.
  • Very Fast: 350-550MB/s sequential read/write. Not having moving parts alone drastically increases the speed limits of solid-state drives. This is expressed even more in random speeds which represent the device’s ability to read/write many tiny files as opposed to one long string of data (sequential) and can be almost a 100 times higher than those of HDDs!

Internal hard drive reliability

The technical specifications of a hard drive show how well it will perform and whether it fits your needs, but, as it is with any pricey product, how long it will last is one of its most important characteristics. Considering how much we rely on our data nowadays and how damaging it would be to lose it, being able to tell reliable brands/drives from unreliable ones is a very important skill.

There are two main sources which can help you with that – customer reviews and data collected from data centers, like Backblaze. Backblaze is a cloud hosting company with almost 50 thousand different internal drives running 24/7. They focus on using and evaluating only consumer-grade hard drives in order to help reviewers like us, manufacturers, and most importantly, the customer to easily find reliability data for tons of hard drive models.

Meanwhile, customer reviews are real-life data points for drive reliability. There are thousands of reviews of the most popular drive models, which reduces consumer error to a minimum and can sometimes reveal some crucial issues with the hard drive, like half the drives breaking a day after its warranty ends, etc.

Picking a brand

From our own experience, we can say that there is no single best hard drive manufacturer out there, as anyone can get a lemon. Although it’s still important to avoid less known and thus less reliable brands, any drive can fail no matter if it is Toshiba, HGST, Seagate, or Western Digital, not to mention different models of a different make.

Warranties and backups – the backbone of secure data storage

All of these companies are big players and sell millions of hard disks each year, and the number is only increasing. Early breakage or complete duds are impossible to avoid among so many units, but there are a couple things that you yourself can do to ensure the safety of both your data and your budget.

First of all, look for a longer warranty. It’s reassuring that if your device breaks in its first year or two, you’ll be able to get a new one. You can rest assured that you will almost always have a hard drive whilst in the warranty period. But what about losing the data that’s stored on a broken drive?

The answer is backups! Even if you haven’t experienced hard drive failure before, it can happen at any time, so it’s important to make sure that all of your important documents and files always have a backup. This can be done either by using an external hard drive or by using cloud storage services. The former might be a pricey one-time purchase, while the latter could end up costing more over time. You can choose either, depending on how you manage your budget, but preferably you should use both for extra reliability.

Full system backups are the way to go as some documents or software might still be lost with partial backups, plus you can save your operating system and settings in case the boot drive breaks. Depending on how you decide to back up your data, you can use either Windows or Mac native backup tools, or get 3rd party software, like AOMEI Backupper. Although cloud services can still get hacked and the external drive can still break like any other, the chance of you losing your data is reduced exponentially.

Internal hard drive performance

The speed of HDD data transfer is one of the most important factors you need to look at before buying a hard drive. Capacity is displayed upfront and you can at least roughly tell how much you’ll need but transfer speeds and even spindle speeds often remain as under-the-hood characteristics. Regardless, to improve the overall performance of your PC/laptop, you need a fast hard drive, since your whole system is almost always as slow as its slowest component and that component is often times the hard drive.

But what exactly do we mean by speed and how does it affect how fast a computer is? Well, there are two main speeds that can be attributed to HDDs, them being spindle speed and data read/write speed.

Hard drive data transfer speed

This is the much more complicated performance metric of a hard drive that depends on many smaller and larger factors. Data transfer speeds or read/write speeds represent the amount of data that a hard drive can deliver to the computer via its interface. These speeds are usually measured in megabytes per second (MB/s), not to be confused with megabits per second (Mb/s, Mbps). Both values represent data speeds, however, 1 byte = 8 bits, so the same measurement in megabits will result in an 8-times larger number (like the math between inches and feet).

In a magnetic hard disk drive, a read/write needle has to seek out the place on the drive’s platters where data has to be either read from or can be written to. The read/written data is sent to/from the computer through the drive’s controller, which decodes signals from both sides so that the HDD and the computer can “understand each other”. The seeking, decoding/encoding, and many other forms of latency add up, making, let’s say, one megabyte of data to be transferred more slowly. The time it takes for it to be transferred can be measured precisely by sending set amounts of data in a controlled manner and measuring how long it takes to transfer them.

You may have heard about sequential and random (4k) read/write speeds being mentioned here and there, but what are they exactly?

The difference between the two is huge – sequential speeds are usually measured in hundreds of megabytes, while random speeds of even 7200RPM hard disk drives rarely exceed 5MB/s. This is because moving the mechanical parts between multiple positions is much more time-consuming than having them move in one “line”. Random speeds correlate to loading games or operating systems, where tons of smaller configuration and source files have to be loaded, while sequential speeds are equal to moving large movies or documents to/from the hard drive.

Although the former will likely be the more accurate representation of real-life performance, there are many more minuscule factors that can add up and drastically change this speed between different benchmarks. However, in broad strokes, if a drive has high sequential speeds, it will most likely have fast random access as well. Seeing how random speeds of HDDs are much more difficult to pin down to a certain number, we, as all other reviewers, will focus only on sequential speeds.

As we mentioned before, you can generally expect 100-130MB/s from 5400RPM drives and 150-200MB/s from 7200RPM drives, but these values can vary a lot between different computers, different software, and even different units of the same drive. Most of the time manufacturers won’t display any estimates since real-life benchmarks can differ a whole lot from idealized benchmarks. These speeds are often displayed on newer OSs when you paste large amounts of data on a drive but are measured much more precisely and reliably via third-party benchmark software, like CrystalDiskMark.


As we mentioned before, there is no “one drive to rule them all” and your best storage solution depends mainly on your needs and wants. Whether it’s high performance, low price, a combination of both, or a more specific usage (like RAID or NAS), we are confident in our picks for the best internal hard drives for each category listed above.

We hope you’ve found the best internal hard drive on our list, or at the very least – the knowledge needed to find one on your own. If you have any questions or information to add to our HDD buying guide (tips, technical info, personal experience, etc.), leave a comment down below and we’ll be sure to answer.


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