Western Digital WD_BLACK SN7100 500GB PCIe 4.0 x4 NVMe M.2 2280

Absurd endurance in a tiny, power-sipping package. Just don't buy the 500GB version unless you only need a boot drive.

The sequential speeds are fine, landing around the 80th percentile overall, but the random write performance is where this thing gets interesting. 1,200K random write IOPS puts it in the 94th percentile, which means it punches way above its weight class for a DRAM-less drive. That's the kind of number that makes a real difference when you're loading shaders or dealing with a million tiny game files. The catch? It's DRAM-less, so sustained heavy writes will eventually slow down, but for gaming and everyday use, you'll rarely notice. The single-sided design is a nice touch for thin laptops and handhelds too.

Against the Samsung 990 PRO, the SN7100 gets absolutely smoked on sequential speeds and capacity options, but it's also way cheaper at the low end. The Crucial T500 is a closer fight, with similar PCIe 4.0 speeds but better all-around consistency thanks to its DRAM cache. The Lexar NM1090 PRO is a different beast entirely, pushing PCIe 5.0 speeds if your board supports it. Honestly, the SN7100's real competition is the Crucial T500 for budget builds and the Samsung 990 PRO if you want the best. The WD drive wins on endurance and price, loses on raw speed and capacity.

The 500GB SN7100 is priced between $138 and $223 USD depending on where you look, and that spread is wild. At the low end, it's a decent deal for a boot drive with ridiculous endurance. At the high end, you're getting fleeced. If you're in Canada, the CAD 162 to CAD 260 range tells the same story. Shop around, because the cheapest listing is the only one that makes sense. For most people, stepping up to the 1TB or 2TB version is the smarter play anyway.

The WD_BLACK SN7100 is a weird little drive. On paper it's a budget-friendly PCIe 4.0 NVMe with some seriously impressive endurance numbers, but the 500GB version we're looking at here feels like it's aimed at a very specific person: someone who wants a cheap, reliable boot drive or a storage bump for a handheld. The headline spec is 6,800 MB/s read and 5,800 MB/s write, which is solid but not going to blow anyone's hair back in 2025. The real story is that 3,000 TBW endurance rating, which is frankly absurd for a drive this size and puts it at the absolute top of the charts for longevity.

If you're looking for a big game library on one drive, this isn't it. The 500GB capacity fills up after like three modern AAA titles. Go grab a 2TB Crucial T500 or Samsung 990 PRO instead. And if you're on a tight budget, there are cheaper DRAM-less drives that'll do the job just fine for everyday use.

The WD_BLACK SN7100 500GB is a niche product that does one thing exceptionally well: it lasts forever. If you need a cheap, reliable boot drive or a storage bump for a Steam Deck or ROG Ally, this is a solid pick at the right price. But if you're building a gaming PC and want to actually store games, get the 1TB or 2TB version, or just buy a Crucial T500. The 500GB capacity is the real bottleneck here, not the speed.