Samsung 860 EVO 250GB SATA III 2.5"

The 860 EVO hits the SATA III ceiling at 550 MB/s read and 520 MB/s write, but that only lands it in the 32nd percentile for speed overall. The endurance story is much better: 150 TBW and a 5-year warranty put it in the 87th percentile. It's a great upgrade for older SATA-only machines, but the 250GB capacity is cramped and grey market units are a real concern.

Let's be real about the numbers. 550 MB/s read and 520 MB/s write is the SATA III speed limit, and the 860 EVO hits it. The 98K random read IOPS and 90K random write IOPS are solid for a SATA drive, though they land in the 42nd percentile overall because NVMe drives have completely reset expectations. The MJX controller and TLC NAND keep things consistent under load, and the TurboWrite buffer got bumped from 12GB to 78GB compared to the 850 EVO, which means you can write a lot more data before speeds drop off. For everyday tasks like booting Windows, launching apps, and moving files around, this drive feels snappy. It's not going to impress anyone who's used to a Gen4 NVMe drive, but it's a massive upgrade from any spinning hard drive.

The DRAM cache is the unsung hero here. A lot of budget SATA SSDs skip the DRAM to save money, and their random performance tanks as a result. The 860 EVO keeps its cache, which is why it stays responsive even when you're multitasking. Power draw is also modest at 2.2W average and 4.0W max, which matters if you're dropping this into a laptop and care about battery life.

Stacked against the competition, the 860 EVO is in a weird spot. The Micron T710, Lexar NM1090 PRO, Western Digital WD_BLACK SN7100, Crucial T710, and ADATA GAMMIX S70 Blade are all NVMe drives that absolutely demolish the 860 EVO on sequential and random performance. The WD_BLACK SN7100 and Crucial T710 are Gen4 drives with read speeds measured in thousands of MB/s, not hundreds. But here's the thing: those drives are also newer, more expensive per gigabyte in some cases, and aimed at gamers and creators who need massive throughput. The 860 EVO is for a different job. It's the drive you put in an older laptop or a hand-me-down desktop to make it feel new again. Against other SATA SSDs, it's still one of the best options out there, especially with that endurance rating. Against NVMe drives, it's not even a fair fight, and you shouldn't pretend otherwise.

Pricing is a bit of a mess right now. US listings range from USD 139 to USD 160, which is a USD 21 spread for the exact same drive. That's not pocket change. If you're buying, shop around and don't just grab the first listing you see. The cheaper end of that range is reasonable for a reliable 250GB SATA SSD with a 5-year warranty, but the higher end starts to feel silly when you can get a 1TB NVMe drive for not much more. The value proposition here is really about longevity and reliability, not raw performance. You're paying for the Samsung name, the warranty, and the endurance rating. If those matter to you, the lower-priced listings are a fair deal. If you just want the most gigabytes per dollar, this isn't it.

The Samsung 860 EVO 250GB is a SATA III drive that tops out at 550 MB/s sequential read and 520 MB/s write. That puts it in the 32nd percentile for speed in our database, which sounds rough until you remember this is a SATA drive competing against NVMe drives that cost more and run circles around it on paper. For a 2.5-inch SATA SSD, those numbers are basically the ceiling of the interface. The endurance story is better: 150 TBW and a 5-year warranty land it in the 87th percentile, which means this drive is built to outlast most of the hardware it'll be installed in.

Where the 860 EVO really shines is the feature set. It's in the 93rd percentile for features, thanks to hardware encryption, DRAM cache, and Samsung's Magician software. The 250GB capacity is the weak link here, sitting in the 11th percentile. If you're cloning a full 500GB drive onto this, you're going to have a bad time. But as a boot drive for an older laptop or a budget desktop build, the capacity is workable if you're disciplined about storage.

If you're building a new PC or upgrading a machine with an M.2 NVMe slot, skip this drive entirely. The 250GB capacity is in the 11th percentile, which is genuinely cramped for modern game installs and media libraries. The SATA III interface caps you at 550 MB/s, and there are NVMe drives in the same price range that offer several times the throughput and more storage. Also skip it if you're not willing to deal with the grey market headache. Multiple verified buyers report Samsung Magician flagging their drives as not genuine, which creates warranty registration problems. If you want plug-and-play peace of mind without hunting for a reputable seller, look elsewhere.

The Samsung 860 EVO 250GB is a reliable, well-built SATA SSD that's past its prime as a performance pick but still makes sense for specific upgrades. The 87th percentile endurance rating and 5-year warranty are the real selling points here. If you've got an older machine with a SATA-only motherboard or you need a dependable boot drive that won't die on you, this is a solid choice. The 250GB capacity is the biggest drawback, and the grey market warranty concerns from buyers are worth taking seriously. Buy from a reputable seller, register the drive with Samsung immediately, and don't expect NVMe-level speeds. For what it is, it's still a good drive. Just know what you're getting.