Kingston KC600 1TB SATA III mSATA

The Kingston KC600 is a 1TB mSATA drive that hits the SATA III ceiling at 550/520 MB/s read/write. It's one of the few new mSATA drives still available with a 5-year warranty. Pricing runs $279-280 in the US and EUR 250-344 in Europe, which is steep for SATA III but justified if you need the form factor. Buy it to revive an older mSATA machine, not for a new build.

Let's talk numbers. Sequential reads top out at 550 MB/s and writes at 520 MB/s. That's the ceiling for SATA III, so Kingston is squeezing everything the interface allows. In our database, speed sits at the 34th percentile overall. That sounds mediocre until you remember the comparison pool includes NVMe drives that do 7,000 MB/s. Against other SATA drives, this is as fast as it gets. The interface is the bottleneck, not the drive.

Random performance is a different story. The 23rd percentile ranking for random operations tells us this isn't a great drive for heavy multitasking or database workloads. The DRAM cache helps, but the SM2259 controller and TLC NAND are tuned for sequential transfers and everyday responsiveness, not sustained random I/O. For booting an OS, loading apps, and moving files around, you'll be fine. For running a busy home server with lots of simultaneous small reads and writes, you'll feel the limits. The endurance ranking at 57th percentile is solidly average, which is fine for a drive in this class.

The competitors in our database are all NVMe drives: the WD Black SN850X, Samsung 990 PRO, Crucial T700, Lexar NM1090 PRO, and Team Group MP44. Comparing the KC600 to these is almost unfair. The SN850X and 990 PRO are Gen4 drives that hit 7,000+ MB/s. The T700 and NM1090 PRO are Gen5 and even faster. The MP44 is a budget NVMe that still crushes SATA III. If your system has an M.2 slot, any of these will run circles around the KC600 for less money in most cases.

But here's the thing: none of those drives fit in an mSATA slot. The KC600's real competition is other mSATA drives, and that market is nearly dead. You might find used Samsung 860 EVO mSATA drives or older Crucial M550 units, but new stock is rare. Kingston is one of the few companies still manufacturing mSATA drives with a full warranty. So the comparison isn't really about speed. It's about availability, warranty coverage, and not gambling on a used drive from eBay. For that specific need, the KC600 wins by default.

Pricing is all over the place, which is worth paying attention to. In the US, you're looking at $279 to $280 across three listings. In Europe, the spread is wider: EUR 250 to EUR 344 across four listings in Germany, Spain, France, and Italy. That's a EUR 94 difference for the exact same drive. If you're shopping in Europe, check the German and Spanish listings first, they tend to sit at the lower end of that range. The Best Buy listing in the US is competitive with Newegg, so you've got options.

Is it worth it? That depends on your situation. For a 1TB SATA III drive, this is expensive. You can get a 1TB NVMe drive for half the price, and it'll be five to ten times faster. But if your machine only accepts mSATA, you don't have that choice. The affordability ranking sits at the 38th percentile, which reflects the premium you pay for a niche form factor. You're not buying raw performance per dollar here. You're buying compatibility and longevity for a machine that would otherwise be e-waste.

The Kingston KC600 in mSATA form factor is one of those products that exists for a very specific reason: keeping older machines alive. If you've got a laptop or small-form-factor desktop from the mSATA era, your upgrade options are thin. Most manufacturers moved to M.2 years ago and left mSATA users behind. Kingston didn't. This 1TB drive slots into that gap and gives you a real capacity bump without replacing the whole machine.

Who is this for? Someone with an older Dell, Lenovo, or HP system that shipped with a tiny mSATA boot drive, often 120GB or 256GB. Those machines are still perfectly usable for everyday tasks, but the original drive is probably full and slowing down. The KC600 is a drop-in fix. It's also useful for niche applications like ZIL/SLOG caching in home servers, which one reviewer actually did with a 116TB RAID array. That's a pretty cool use case we don't see every day.

What makes it interesting is the combination of DRAM cache, TLC NAND, and a full security suite. A lot of budget SATA drives skip the DRAM to save cost, which tanks random performance. Kingston kept it here. You also get AES 256-bit hardware encryption, TCG Opal, and eDrive support. That's more than you'd expect from a drive aimed at legacy systems. The feature set lands in the 94th percentile in our database, which is genuinely impressive for a SATA III drive in 2025.

If your system has an M.2 slot, do not buy this drive. You'd be paying more for a fraction of the performance. A 1TB NVMe drive like the Team Group MP44 costs less and delivers speeds that make the KC600 look like a floppy disk. Even a budget SATA 2.5-inch drive would be a better value if you have a standard drive bay.

Also skip this if you're building a new PC or upgrading a system from the last five years. mSATA is dead technology for new builds. The only reason to buy this drive is to extend the life of an older machine that has no other upgrade path. If that's not your situation, put your money toward an NVMe drive or a larger SATA SSD instead.

If you have an older laptop or desktop with an mSATA slot and you want to keep it running, buy this drive. The 1TB capacity is a massive upgrade from the 120GB or 256GB drives those machines shipped with. The DRAM cache keeps everyday performance snappy, and the 5-year warranty means you won't be shopping for another mSATA drive anytime soon. The security features are a nice bonus if you're using this in a work machine.

For everyone else, skip it. If your system has an M.2 slot, get an NVMe drive. You'll spend less and get dramatically better performance. If you're building a new system, mSATA shouldn't even be on your radar. This drive is a rescue product for aging hardware, and it does that job well. Just don't expect it to compete with modern storage.