Western Digital 1TB SSD PCIe 4.0 NVMe M.2 2280

The SN580 is the budget NVMe king, with a massive SLC cache that makes it feel faster than it has any right to be. Skip the flagship tax and buy this instead.

The numbers tell a fun story here. Sequential reads and writes both hit 4,150 MB/s, which lands it in solid territory, around the 70th percentile for speed. But the random performance is where this thing gets interesting. 600K random read IOPS and 750K random write IOPS put it at the 89th percentile, meaning it's trading blows with drives that cost significantly more. The DRAM-less design should hurt, but that huge SLC cache and HMB setup mask it well. One thing that surprised us: users report it runs hot under sustained load. Not dealbreaker hot, but hot enough that a heatsink is worth considering if you're hammering it with big file transfers.

Against the Samsung 990 PRO, the SN580 loses on raw speed but wins on value. The 990 PRO is a flagship with DRAM and higher sequential numbers, but you'll pay a premium for it. The Crucial T500 sits in a similar spot to the 990 PRO, faster than the SN580 but pricier. The Kingston Fury Renegade is another step up in performance, but again, more money. If you're building a budget gaming rig or need a secondary drive, the SN580 makes more sense than any of those. If you're doing heavy 4K video editing or constant large file transfers, step up to the T500 or 990 PRO.

This is where the SN580 earns its keep. Prices bounce around a lot depending on where you shop. In the US you'll see it anywhere from USD 193 to USD 299, which is a wild spread for the same drive. Newegg has the best deal at the low end, so don't pay more than you have to. In Europe it's EUR 299 to EUR 336, with the best price showing up across DE, ES, FR, and IT listings. At the low end, this is a steal. At the high end, you're getting into territory where a Samsung 990 PRO starts looking tempting.

The WD Blue SN580 is the budget NVMe drive that punches way above its weight class. It's DRAM-less, sure, but WD stuffed it with a massive 341GB SLC cache and a 200MB Host Memory Buffer, which means it holds its speed far longer than most drives in this price range. The one thing to know: this is the drive to buy when you want 4,150 MB/s reads without paying flagship money.

If you're doing heavy 4K or 8K video editing, constant large file transfers, or running a workstation that hammers storage all day, this isn't your drive. The DRAM-less design will show its limits under sustained write loads. Go grab a Samsung 990 PRO or Crucial T500 instead. You'll pay more, but you'll get the sustained performance this drive can't match.

Buy it. The WD Blue SN580 is the budget NVMe drive to beat right now. It's not the fastest Gen 4 drive on the market, but it delivers 90% of the real-world performance for a fraction of the price. The huge SLC cache and solid endurance make it a no-brainer for gamers, general users, and anyone building a second system. Just grab a cheap heatsink and you're set.