Kingston 1TB SSD SATA III mSATA

The Kingston KC600 mSATA is a niche product done right. It hits the SATA III speed ceiling at 550/520 MB/s, packs best-in-class security features, and comes with a 5-year warranty. At $279 to EUR 344, it's expensive for SATA speeds, but it's one of the only 1TB mSATA drives still available from a major brand. Buy it if you have an older machine with an mSATA slot and no other upgrade path. Everyone else should look at cheaper 2.5-inch or NVMe options.

Let's be real about the numbers. 550 MB/s sequential read and 520 MB/s write is basically the ceiling for SATA III. You can't squeeze more out of this interface, and the KC600 hits those numbers without breaking a sweat. In our database, that puts it at the 34th percentile for speed overall, which sounds bad until you remember it's being compared against NVMe drives that cost twice as much and use a completely different interface. For a SATA drive, this is as fast as physics allows.

The random performance is where things get a little less rosy. At the 22nd percentile, random reads and writes are a weak spot compared to modern drives. That DRAM cache helps, but the SATA interface itself is the bottleneck. In real-world terms, boot times and app launches will feel snappy compared to a spinning hard drive, but don't expect the instant-everything feel of an NVMe drive. If you're coming from an old HDD, this will feel transformative. If you're coming from a decent SATA SSD, it'll feel like a lateral move.

The obvious comparison is against NVMe drives like the Western Digital Black SN850X, Samsung 990 PRO, Crucial T500, and Lexar NM1090 PRO. Those drives absolutely demolish the KC600 on paper. We're talking 7,000+ MB/s versus 550 MB/s. But that comparison misses the point entirely. Those drives use M.2 slots. If your machine has an mSATA slot and nothing else, the NVMe drives might as well be from another planet. You literally cannot install them.

The more honest comparison is against other mSATA drives still floating around, and that's a short list. Most manufacturers have abandoned the form factor entirely. The Micron T710 and other enterprise-focused drives sometimes show up in mSATA, but they're usually sold through industrial channels at even higher prices. What you're really comparing here is availability and trust. Kingston still makes these, still warranties them for 5 years, and still has actual customer support. That's worth something when the alternative is gambling on a used drive from eBay.

Here's where things get tricky. The KC600 mSATA is not cheap. In the US, you're looking at $279 to $280 across three listings. In Europe, the spread is wild, ranging from EUR 250 to EUR 344 depending on which store you hit. That EUR 94 gap is worth paying attention to. If you're in Germany, Spain, France, or Italy, shop around before you commit. The best deal we're seeing is at the EUR 250 end of that range, and honestly, that's the only price point where this drive starts to make sense.

At $279 or EUR 300+, you're paying a serious premium for the mSATA form factor. A comparable 1TB 2.5-inch SATA SSD costs half as much. But that's the thing, you're not buying this because it's a good deal per gigabyte. You're buying it because it's one of the only 1TB mSATA drives still on the market from a reputable brand. When your only other option is some no-name drive from a brand you've never heard of, paying extra for Kingston's warranty and support starts to look like insurance, not extravagance.

The Kingston KC600 in mSATA form factor is one of those products that exists for a very specific reason. You're not buying this because you want the fastest drive on the planet. You're buying it because you have an older laptop, a mini PC, or some niche industrial machine with an mSATA slot and you need to breathe new life into it without replacing the whole system. And for that job, it's actually pretty great.

Kingston packed this thing with their usual reliability chops. You get 3D TLC NAND, a DRAM cache, and the Silicon Motion SM2259 controller. That DRAM cache matters more than you'd think on a SATA drive, it keeps random reads and writes from turning into a stuttery mess when the drive fills up. The 5-year warranty is also a nice signal that Kingston expects this drive to outlive whatever ancient laptop you're dropping it into.

The security suite is a standout here. AES 256-bit hardware encryption, TCG Opal, and eDrive support put this drive in the 94th percentile for features among all drives in our database. That's genuinely best-in-class territory. If you're upgrading a work laptop that handles sensitive data, this is one of the few mSATA options that won't make your IT department nervous.

If your machine has an M.2 slot, skip this drive entirely. You can get a 1TB NVMe drive like the WD Black SN850X or Samsung 990 PRO for similar money, and those drives are genuinely 10x faster. The KC600's 550 MB/s ceiling will feel ancient by comparison. Same goes for anyone with a 2.5-inch SATA bay. A standard 1TB SATA SSD costs half as much and performs identically.

Also skip this if you're building a new system. mSATA is a legacy form factor with no future. Any new motherboard worth buying has M.2 slots, and some don't even include SATA ports anymore. Buying an mSATA drive for a new build is like buying a brand new car with a cassette player. It works, but you're locking yourself into obsolete tech from day one.

If you have an older machine with an mSATA slot and you need more storage, the KC600 is the safest bet you can make. The 1TB capacity is a massive upgrade for most systems that originally shipped with 128GB or 256GB drives. The security features are a genuine bonus if you're using this in a work context, and the DRAM cache means performance won't fall off a cliff as the drive fills up. Just make sure your system actually supports mSATA before you buy. One of the few customer reviews we have mentions a system that wouldn't even POST with this drive installed, which is almost certainly a compatibility issue, not a defect.

For everyone else, this drive is a hard pass. If your machine has a 2.5-inch SATA bay, buy a regular SATA SSD for half the price. If it has an M.2 slot, buy an NVMe drive and enjoy 10x the speed for the same money. The KC600 mSATA exists for a narrow slice of users, and for them, it's genuinely good. For everyone else, it's an expensive solution to a problem you don't have.