Synology 1.6TB SSD NVMe M.2 2280

The SNV5420-1600G is an endurance monster with 2,900 TBW, putting it in the 98th percentile of our database. Random read performance is a standout at 660K IOPS, but sequential writes cap at 1,000 MB/s. It's expensive and specialized, but for a Synology NAS cache, it's hard to beat.

Let's talk about those random IOPS, because that's the real story. 660,000 sustained 4K random read IOPS is a standout number, landing in the 85th percentile of everything we've tested. For a NAS cache, that means metadata lookups, small file access, and VM boot storms all feel snappy. The 120K random write IOPS is less flashy but still well above average for an enterprise drive at this capacity.

Sequential performance is more modest. 3,000 MB/s read and 1,000 MB/s write put this drive at the 55th percentile for speed. The write number especially feels conservative for a PCIe 4.0 x4 drive. Synology clearly tuned this for sustained random workloads rather than bursty sequential transfers. The DRAM cache helps keep latency consistent, and the end-to-end data integrity safeguards mean you're not trading reliability for that performance. If you're moving huge video files around all day, you'll notice the write ceiling. If you're running a busy multi-user NAS, you probably won't.

Against the Samsung 9100 PRO, the Synology gets smoked on sequential speed. The 9100 PRO is a consumer flagship built for raw throughput, while the SNV5420 trades that for endurance. The Western Digital Black SN850X is another consumer drive that will beat the Synology on sequential writes and cost far less, but its TBW rating is a fraction of 2,900. The Kingston FURY Renegade G5 and Crucial T500 are similar stories: faster sequential numbers, lower endurance, much lower prices. The Micron T710 is the closest philosophical match, an enterprise-leaning drive with serious endurance, but even it doesn't hit the Synology's TBW at this capacity. If you're buying for a Synology NAS specifically, the automatic firmware updates via DSM and the lifetime wear analytics tip the scales. If you're buying for a PC, any of those competitors makes more sense.

There's no way around it: this drive is expensive. The US listing sits at $1,746, and the affordability percentile is 4th, which means almost everything else in our database costs less. You're paying for the endurance rating and the Synology integration, not raw speed. The 5-year warranty and 2,900 TBW mean the cost per terabyte written over the drive's life is actually reasonable for enterprise gear, but if you're just looking for a fast boot drive, you're overpaying by a lot. The CAD listing at $4,789 and GBP listing at £2,098 tell the same story in different currencies. This is a specialized tool with a specialized price tag.

The Synology SNV5420-1600G is a 1.6TB M.2 NVMe drive built for one thing: getting hammered in a NAS cache and not flinching. The endurance number is the headline here. 2,900 TBW puts it in the 98th percentile of our database, which means you can write roughly 1.6TB per day for five years and still be inside warranty. That's not a typo. The 3,000,000 hour MTBF backs that up too.

But the speed story is more complicated. Sequential reads hit 3,000 MB/s and writes land at 1,000 MB/s, which puts overall speed at the 55th percentile. That's fine for a cache drive, but it's not going to win any drag races against consumer PCIe 4.0 drives. The random performance is where it earns its keep: 660K read IOPS and 120K write IOPS, good for the 85th percentile. For a Synology NAS, that's the number that actually matters day to day.

If you're not running a Synology NAS, skip this drive. The 4th percentile affordability means you're paying a huge premium for DSM integration you won't use. The 1,000 MB/s sequential write speed is a weak spot for a PCIe 4.0 drive, and at the 55th percentile for overall speed, plenty of cheaper consumer drives will feel faster in everyday use. The portable score of 15.6/100 tells you everything: this is not a laptop drive, not a desktop drive, not a general-purpose drive. It's a NAS cache component. If that's not your exact use case, buy something else.

The SNV5420-1600G is a purpose-built drive that does its job extremely well. The 2,900 TBW endurance is best-in-class, the random read performance is a standout, and the Synology-specific features like automatic firmware updates and real-time wear monitoring make it the obvious choice for a Synology NAS cache. But the 1,000 MB/s sequential write speed and the 4th percentile affordability mean it's a terrible value for anyone outside that specific use case. Buy it if you're running a busy Synology unit and want a cache drive you'll never have to think about. Skip it if you're building a PC or just want fast storage.