Western Digital WD_BLACK SN7100

The WD_BLACK SN7100 is a top-tier PCIe 4.0 SSD with 7,250 MB/s reads and excellent endurance. It's one of the best Gen4 drives we've tested, especially for laptops and handhelds. Just make sure you grab a heatsink and don't overpay, prices swing from USD 300 to USD 388.

Sequential reads hit 7,250 MB/s and writes land at 6,900 MB/s, which is about as fast as PCIe 4.0 gets before you step up to Gen5. Random performance is no slouch either, with 1,000K read IOPS and 1,400K write IOPS. That write IOPS number is a standout, one of the best we've seen on a DRAM-less drive. Real-world feedback backs this up. One owner reported hitting 7GB/s read and write speeds after install. The lack of DRAM doesn't seem to hurt in gaming workloads, where sustained sequential reads matter more than cache gymnastics. For laptops and handhelds, the power efficiency claim of up to 100% better than the previous generation is a big deal, though we couldn't verify that independently.

The SN7100 goes head to head with the Samsung 990 PRO and the Kingston KC3000, and it holds its own. The 990 PRO edges it out slightly on random read performance, but the SN7100's write IOPS are actually higher. The Seagate FireCuda 530R offers similar endurance but typically costs more. The Crucial T705 is a Gen5 drive that blows past all of these on paper, but you'll pay a serious premium and need a Gen5 motherboard to see the benefit. For most gamers on PCIe 4.0, the SN7100 is the sweet spot between price, speed, and endurance.

Pricing is all over the place right now. We're seeing USD 300 to USD 388 across three US listings, which is a USD 88 spread. That's a huge gap for the same drive. Best Buy has the lowest everyday price at USD 300, and they offer price matching, so that's where we'd point you. At USD 300, this drive is a solid deal for 2TB of top-tier Gen4 performance. At USD 388, you're paying too much. Shop around before you click buy.

The WD_BLACK SN7100 is Western Digital's latest PCIe 4.0 drive aimed squarely at gamers who want big speed without a big headache. It hits 7,250 MB/s read and 6,900 MB/s write, which puts it in the top tier of Gen4 drives we've tracked. The 2TB model gives you 1,200 TBW of endurance, so you can write, delete, and rewrite games until your thumbs give out.

It's DRAM-less, which usually makes us nervous, but WD's controller and TLC NAND combo clearly know what they're doing. Our database puts this drive's speed in the 89th percentile and its social proof at the very top. People are buying it, installing it, and mostly loving it.

Skip this if you're building a workstation that hammers the drive with sustained heavy writes all day. The DRAM-less design can show its limits under extreme sustained workloads, and you'd be better off with something like the Samsung 990 PRO or a Gen5 drive. Also skip it if you refuse to buy a separate heatsink, because this thing runs bare and you'll need one for a PS5 or tight laptop bay.

If you're running a laptop, handheld, or PS5 and want a fast 2TB drive that just works, the SN7100 is an easy recommendation. It's fast, reliable, and backed by a 5-year warranty. The lack of a heatsink is annoying, especially for PS5 owners who need one for the expansion slot, but a decent aftermarket heatsink costs less than USD 15. Buy it at the right price and you won't regret it.