Samsung 128GB SSD SATA III 2.5"

The Samsung 850 PRO is a solid SATA SSD with a killer warranty and great endurance, but 128GB is tiny and SATA III caps the speed. It's perfect for reviving an old laptop, not for a primary machine. At US prices it's a decent deal, but European buyers should look elsewhere.

Sequential reads hit 550 MB/s and writes land at 470 MB/s, which is about as good as SATA III gets. Random performance is solid for the interface, with 100K read IOPS and 90K write IOPS. But in our database, speed sits at the 24th percentile overall. That's not a knock on Samsung, it's just physics. SATA III is a three-lane highway compared to the eight-lane NVMe expressway. For boot times and app launches on an older rig, it still feels transformative. Just don't expect it to keep up with a modern PCIe 4.0 drive.

Stacked against modern competitors like the Crucial T500, MSI SPATIUM M480 PRO, or Western Digital Black SN850X, this drive gets smoked on raw speed. Those NVMe drives deliver multiple gigabytes per second, while the 850 PRO is capped at 550 MB/s. But they also cost more per gigabyte and require an M.2 slot. If your machine only has SATA, those fancy drives aren't even an option. The Lexar NM790 and Corsair MP700 Elite are similarly irrelevant for SATA-only systems. This is a different tool for a different job.

Pricing is all over the map. US listings hover around $78-80, while European listings sit at €180-193. That's a massive gap, and honestly, the European price is hard to justify for a 128GB SATA drive in 2024. At the US price, it's a reasonable way to revive an old machine. At the European price, you're paying a premium for the Samsung name and that warranty. Affordability ranks at the 80th percentile, but that's relative to other SSDs, not absolute value.

The Samsung 850 PRO is a relic from a simpler time, when SATA was king and 128GB felt like a palace. Today it's a niche pick for breathing life into old laptops or desktops. The 10-year warranty and 150 TBW endurance rating are still impressive, but the capacity is a hard ceiling.

This drive sits in a weird spot. It's not fast by modern NVMe standards, and 128GB fills up fast. But for a boot drive in an older machine, it's a cheap-ish way to get that SSD snappiness without replacing the whole system.

Skip this if you have an M.2 slot available, because any modern NVMe drive will run circles around it for similar money. Also skip it if you need more than 128GB, because you'll be juggling files within a month. And if you're in Europe, the €180+ price tag is a hard pass when you can get a 1TB SATA SSD for less.

Buy this if you have an older laptop or desktop with a SATA port and a spinning hard drive. The jump from HDD to SSD is still the single best upgrade you can make, and this drive delivers that reliably. It's not for power users, gamers, or anyone who needs real capacity. It's a boot drive for a secondary machine, a parent's laptop, or a retro build.