Samsung 850 PRO

The 850 PRO hits the 95th percentile for user sentiment with a 4.7-star average from 9,577 reviews, and one owner's drive survived a flood with data intact. It maxes out SATA III at 550 MB/s read, but that puts it at the 32nd percentile for speed compared to modern NVMe drives. The 10-year warranty and 150 TBW endurance rating are the real selling points here.

The spec sheet says 550 MB/s sequential read and 520 MB/s write, which was top of the SATA III food chain when this drive launched. But here's the thing: SATA III caps out around 600 MB/s, so those numbers are essentially the ceiling for this interface. The 100K random read IOPS and 90K random write IOPS are solid for a 2.5-inch drive, though our database puts random performance at the 42nd percentile and speed at the 32nd percentile overall. That's not a knock on the 850 PRO itself, it's just what happens when you compare a SATA drive against NVMe drives that do 7,000 MB/s. For what it is, this drive maxes out the interface. The Samsung MEX controller and DRAM cache keep things snappy in real-world use, and owners consistently mention boot times and general responsiveness as night-and-day improvements over spinning drives.

Stacked against the Micron T710, Lexar NM1090 PRO, or Western Digital SN7100, the 850 PRO gets absolutely smoked on raw speed. Those NVMe drives push thousands of MB/s while this one is capped at 550. But the 850 PRO wins on the metric those drives haven't had time to prove: longevity. The 91st percentile endurance rating and 10-year warranty are things modern budget NVMe drives simply don't offer. The Crucial T710 and ADATA GAMMIX S70 Blade are faster and often cheaper per gigabyte, but none of them have a decade of real-world survival stories behind them. If you need speed, buy an NVMe. If you need a drive that will outlive your next three computers, this is the one.

Pricing on this drive is all over the map. We're seeing USD 150 to USD 389 across just two US listings, which is a USD 239 spread for the exact same drive. At the low end, you're getting a legendary reliability story for the price of a budget NVMe. At the high end, you're paying collector prices for a SATA drive that can't touch modern PCIe speeds. If you're shopping for one of these, the USD 150 listing is the obvious move. The 10-year warranty adds real value here, especially since Samsung actually honored it for years after launch.

The Samsung 850 PRO sits at the 95th percentile for user sentiment in our database, and honestly, that's the number that tells the real story here. A 4.7-star average across nearly 9,600 reviews is rare for any product, let alone a SATA SSD from 2014. This drive has earned a reputation for surviving things that would kill lesser hardware, including one owner who pulled it out of a flooded house with all data intact. The 10-year warranty and 2,000,000 hour MTBF rating back up the confidence Samsung put in this thing.

If you're building a new system with an M.2 slot, skip this. The 32nd percentile speed ranking means you're leaving massive performance on the table compared to even budget NVMe drives. The 512GB capacity at the 33rd percentile is also a real limitation for anyone working with large files or game libraries. And if you're shopping at the USD 389 end of the price range, you're paying nearly triple what this drive is worth. This is a drive for people with older SATA-only systems who value reliability over raw speed.

The 850 PRO is a relic in the best possible way. It's not the fastest drive in our database, not even close, but it's one of the most trusted. A 95th percentile sentiment score doesn't happen by accident. Owners love this thing because it just works, year after year, and Samsung backed it with a warranty that outlasted most people's entire PC builds. For an older system with SATA ports, this is still a fantastic upgrade. For a new build with M.2 slots, you're better off with something modern.