Western Digital Blue SA510 1TB SATA III 2.5"

The WD Blue SA510 is a cheap, reliable way to bring an old SATA laptop back from the dead. Just don't pay more than USD 200 for it, and don't buy it if you have an M.2 slot.

Sequential reads hit 560 MB/s and writes land at 520 MB/s, which is fine for a SATA drive but puts it in the bottom third of our database for speed. The random performance is the real weak spot, sitting near the bottom of the charts. That means big file transfers feel okay, but lots of small operations like booting Windows or launching a pile of apps won't feel as snappy as even a budget NVMe drive. The 400 TBW endurance rating is solid though, well above average for this class, so you won't wear it out anytime soon.

The SA510 doesn't really compete with the Samsung 990 PRO or Crucial T500. Those are NVMe drives that run circles around this thing, but they also cost more and require an M.2 slot. The real comparison is against other SATA drives like the Crucial MX500 or Samsung 870 EVO. The MX500 has better random performance and similar endurance, while the 870 EVO is faster across the board but usually pricier. If you're stuck on SATA and want the best, get the 870 EVO. If you want to spend as little as possible, the SA510 at its lowest price is fine.

Pricing is all over the place right now. We're seeing USD 195 to USD 280 across US listings, which is a USD 85 spread for the exact same drive. That's absurd. If you're paying more than USD 200 for this, you're getting ripped off. Shop around and grab it at the low end, because at USD 195 it's a decent deal. At USD 280, you're dangerously close to NVMe territory where you'd get 5-10x the speed for a little more cash.

The WD Blue SA510 is the SSD you buy when your old laptop is wheezing and you just want it to feel alive again without spending real money. It's a 1TB SATA drive with 560 MB/s reads and 520 MB/s writes, which is about as fast as SATA gets, but that's also the problem. SATA is a dead end. If your machine has an M.2 slot, this isn't the drive for you. But for reviving an older desktop or laptop stuck on SATA, it's a cheap, reliable shot of adrenaline.

If your PC has an M.2 slot, this drive is a waste of your time. You can get a budget NVMe drive like the Team Group MP44 for similar money and it'll run circles around the SA510. Also skip it if you're doing heavy video editing or moving massive files constantly. The slow random performance and SATA ceiling will drive you nuts. Get a Samsung 870 EVO if you're stuck on SATA and need more speed, or go NVMe if you can.

The WD Blue SA510 is a one-trick pony, but it's a good trick. It turns a sluggish old laptop with a spinning hard drive into something that boots in seconds and feels responsive again. The 5-year warranty and 400 TBW endurance mean you won't have to worry about it dying on you. Just don't overpay. Find it under USD 200 and it's a solid buy for SATA-only machines. If your PC has an M.2 slot, skip this entirely and get an NVMe drive.