PNY CS900 1TB SATA III 2.5"

The PNY CS900 is a budget SATA SSD that does exactly what it promises: makes old computers feel fast again. It's cheap, reliable, and easy to install, but SATA speeds and a DRAM-less design mean it can't compete with modern NVMe drives. Worth buying if you're upgrading an older system and find it at the low end of its price range.

Sequential reads top out at 535 MB/s with writes at 515 MB/s, which is about as fast as SATA III gets. Boot times and app launches will feel snappy compared to an HDD, and PNY claims up to 50% faster boot times than traditional drives. But the speed percentile sits at 24th, and random performance is even lower at 20th. That DRAM-less design shows up when you're hammering lots of small files. For everyday use it's fine. For heavy multitasking or large file transfers, it's going to feel sluggish compared to any modern NVMe drive.

Stacked against the Micron T710, Lexar NM1090 PRO, Samsung 990 PRO, and WD_BLACK SN7100, the CS900 looks like it's playing a different sport. Those are all Gen4 and Gen5 NVMe drives with speeds measured in thousands of MB/s. The CS900 maxes out at 535 MB/s. But here's the thing: those drives cost significantly more and require an M.2 slot. If you're upgrading an older machine with only SATA ports, the CS900 isn't competing with those drives at all. It's competing with your old hard drive, and it destroys that.

Pricing is all over the place right now. We're seeing USD 129 to USD 250 across four US listings, which is a wild spread for a budget SATA drive. At the low end, this is a solid deal for 1TB of storage. At the high end, you're getting into NVMe territory and should absolutely buy one of those instead. Shop around before you pull the trigger. The value proposition only holds up if you're paying closer to the bottom of that range.

The PNY CS900 is a 1TB SATA SSD that knows exactly what it is: a cheap, reliable way to breathe life into an older machine. You're not getting NVMe speeds here, but you're also not paying NVMe prices. For anyone still booting off a spinning hard drive, this is a night and day upgrade.

It's DRAM-less with TLC NAND, which keeps costs down but means random performance takes a hit. That's fine for a boot drive in an old laptop or a game storage drive, but don't expect it to hang with modern Gen4 or Gen5 drives. It's a budget workhorse, not a racehorse.

Skip this if your machine has an M.2 slot, because even a budget NVMe drive will run circles around it for similar money. Also skip it if you do heavy video editing, large file transfers, or anything that hammers random I/O. The DRAM-less design and SATA interface will frustrate you. And if you need portable storage, look elsewhere, the portable score in our database is one of the lowest we've seen.

Buy this if you have an older laptop or desktop that's still running on a hard drive and you want a cheap, reliable speed boost. It's also a fine secondary drive for game storage or media. The endurance rating is respectable at 450 TBW, and the 3-year warranty gives some peace of mind. Just don't buy it expecting modern performance. If your machine has an M.2 slot, skip this and get an NVMe drive instead.