The best SSDs in 2025

How we test SSDs

I’ve either tested or personally use daily every SSD recommended on this list. Out of our top picks, I bought four with my own money after doing about a dozen hours of research. Separately, Engadget Senior Reporter Jeff Dunn has also tested a handful of our recommendations, including the Crucial X9 Pro listed above.

What to look for in a PC SSD

The most affordable way to add fast storage space to a computer is with a 2.5-inch SATA drive. It’s also one of the easiest if you don’t want to worry about compatibility since almost every computer made in the last two decades will include a motherboard with Serial ATA connections. For that reason, the best SATA SSDs are an excellent choice if you want to extend the life of an older PC build. Installation is straightforward, too. Once you’ve secured the internal SSD in a drive cage, all you need to do is to connect it to your motherboard and power supply.

The one downside of SATA drives is that, in terms of responsiveness, they’re slower than their high-performance NVMe counterparts, with SATA III limiting data transfers to 600MB/s. But even the slowest SSD will be significantly faster than the best mechanical drives. And with high-capacity, 1TB SATA SSDs costing about $100, they’re a good bulk-storage option.

If your PC is newer, there’s a good chance it includes space for one or more M.2 SSDs. The form factor represents your ticket to the fastest SSDs on the market, but the tricky part is navigating all the different standards and specs involved.

M.2 drives can feature either a SATA or PCIe connection. SSDs with the latter are known as Non-Volatile Memory or NVMe drives and are significantly faster than their SATA counterparts, with Gen3 models offering sequential write speeds of up to 3,000MB/s. These drives rely on NVMe NAND technology for their superior performance and durability. You can get twice the performance with a Gen4 SSD, but you’ll need a motherboard and processor that supports the standard.

If you’re running an AMD system, that means at least a Ryzen 3000 or 5000 CPU and an X570 or B550 motherboard. With Intel, meanwhile, you’ll need at least an 11th or 12th Gen processor and a Z490, Z590 or Z690 motherboard. Keep in mind that Gen4 SSDs typically cost more than their Gen3 counterparts as well.

More expensive still are the latest Gen5 models, which offer sequential read speeds of up to 16,000MB/s. However, even if your computer supports the standard, you’re better off buying a more affordable Gen4 or Gen3 drive. At the moment, very few games and applications can take advantage of Gen3 NVMe speeds, let alone Gen4 and Gen5 speeds. What’s more, Gen5 NVMe drives can run hot, which can lead to performance and longevity issues. Your money is better spent on other components, like upgrading your GPU, for now.

As for why you would buy an M.2 SATA drive over a similarly specced 2.5-inch drive, it comes down to ease of installation. You add M.2 storage to your computer by installing the SSD directly onto the motherboard. That may sound intimidating, but in practice the process involves a single screw that you first remove to connect the drive to your computer and then retighten to secure the SSD in place. As an added bonus, there aren’t any wires involved, making cable management easier.

Note that you can install a SATA M.2 SSD into an M.2 slot with a PCIe connection, but you can’t insert an NVMe M.2 SSD into a M.2 slot with a SATA connection. Unless you want to continue using an old M.2 drive, there’s little reason to take advantage of that feature. Speaking of backward compatibility, it’s also possible to use a Gen4 drive through a PCIe 3 connection, but you won’t get any of the speed benefits of the faster NVMe.

One last thing to consider is that M.2 drives come in different physical sizes. From shortest to longest, the common options are 2230, 2242, 2260, 2280 and 22110. (The first two numbers represent width in millimeters and the latter denote the length.) For the most part, you don’t have to worry about that since 2280 is the default for many motherboards and manufacturers. Some boards can accommodate more than one size of NVMe SSD thanks to multiple standoffs. That said, check your computer’s documentation before buying a drive to ensure you’re picking up a compatible size.

If you’re buying a replacement SSD for the Steam Deck or Steam Deck OLED, things are less complicated. For Valve’s handheld, you will need a 2230 size NVMe. Simple. If you don’t want to open your Steam Deck, it’s also possible to expand its storage by installing a microSD card. Engadget has a separate guide dedicated to SD card storage, so check that out for additional buying advice.

I alluded to this earlier, but the best buying advice I can offer is don’t get too caught up about being on the bleeding edge of storage tech. The sequential read and write speeds you see manufacturers list on their drives are theoretical and real-world performance benchmark tests vary less than you think.

If your budget forces you to choose between a 1TB Gen3 NVMe and a 512GB Gen4 model, go for the higher-capacity one. From a practical standpoint, the worst thing you can do is buy a type of SSD that’s too small for needs. Drives can slow dramatically as they approach capacity, and you will probably end up purchasing one with a larger storage capacity in the future.

What to look for in portable and USB flash drives

Portable SSDs are a somewhat different beast to their internal siblings. While read and write speeds are important, they are almost secondary to how an external drive connects to your PC. You won’t get the most out of a model like the SanDisk Extreme Pro V2 without a USB 3.2 Gen 2 x 2 connection. Even among newer PCs, that’s something of a premium feature. For that reason, most people are best off buying a portable drive with a USB 3.2 Gen 2 or Thunderbolt connection. The former offers transfer speeds of up to 10Gbps. The best external hard drives also allow you to transfer data from your Windows PC to a Mac, or other device, if compatible. Be sure to consider this beforehand if you plan to use your portable drive across multiple devices.

Additionally, if you plan to take your drive on trips and commutes, it’s worthwhile to buy a model with IP-certified water and dust proofing. Some companies like Samsung offer rugged versions of their most popular drives with a high endurance rating. For additional peace of mind, 256-bit AES hardware encryption will help prevent someone from accessing your data if you ever lose or misplace your external SSD.

Some of the same features contribute to a great thumbstick drive. Our favorite picks for best budget external SSD models feature USB 3.0 connections and some form of hardware encryption.

A note on console storage

Seagate