CRUCIAL M.2 MX300 1TB DISKMARK PC

All SN770 drives are backed by a five-year warranty, by the way.Ī lack of complexity is highlighted by the sparseness of the upper side and no components on the rear.

CRUCIAL M.2 MX300 1TB DISKMARK PC

That’s all well and good in modern PC systems, but do note it’s not ideal for the PlayStation 5, which doesn’t carry HMB support, so you are likely to see degraded performance. In particular, getting around this potential issue, SN770 uses Host Memory Buffer (HMB) technology to replicate the benefits of onboard DRAM, and it works by harnessing system memory as a proxy, with communication travelling to-and-fro the PCIe bus. What’s also clear is the lack of DRAM for buffering duties between controller and NAND, so WD must have a lot of confidence in the design. A single NAND is accompanied by a recent controller (SanDisk 20-82-10081-A1) that’s similar to the one employed by the cheaper Blue SN570 (20-82-10048-A1). Going back to the first picture illuminates WD’s strategy. No qualms on sequential and random 4K performance, either, while WD matches the 600 TBW endurance for the 1TB capacity witnessed on other recent SSDs in its arsenal. Other specifications are suitably robust and help bridge the yawning performance gap previously existing between top dog SN850 and SN750 SE. Of course, SN770 is backward-compatible with motherboards featuring the older, slower PCIe 3.0 x4 M.2 slots, but using it on those platforms limits scope. Letting the NAND and four-channel controller breathe, the sequential read and write speeds are 43 and 73 per cent faster, respectively, than its direct predecessor. Specifications WD Black SN770Ī perusal reveals WD uses the PCIe 4.0 x4 interface to extract more oomph from this series.

WD is typically coy in revealing any further details or exact composition of the NAND – which is sadly true in this case, too – but we gather it uses 112-layer BiCS 3D triple-level-cell (TLC) memory. Such is the density of modern NAND that the company is able to accommodate the entire 1TB capacity in a single chip, shown on the left, and built by subsidiary SanDisk (identified as 001397).

Crucial m.2 mx300 1tb diskmark