As the hand held gaming PC market grows, there may be an ever-increasing demand for storage options to deal with the rising dimension of video games. Enter WD with a brand new addition to their efficiency Black product line, the WD_Black SN770M, an M.2 2230 Gen 4 NVMe SSD – may this be the proper improve to your Steam Deck?
At launch, the WD_Black SN770M product line consists of three fashions, a 500GB entry drive, 1TB and the flagship 2TB mannequin that WD kindly despatched us to evaluate. The drive makes use of a mix of an in-house WD 4-channel PCIe 4.0 controller and 112-layer BiCS5 TLC NAND. The SN770M is a DRAMless design utilizing HMB (Host Memory Buffer) expertise as an alternative.
Sequential efficiency figures quoted by WD are as much as 5,150MB/s and 4,850MB/s for learn/writes respectively for the 2TB drive. The 1TB drive has the identical learn determine however with writes barely quicker at as much as 4,900MB/s. The 500GB will get learn/write scores of as much as 5,000MB/s and 4,000MB/s for learn and writes respectively.
Random efficiency for the 2TB mannequin is quoted as as much as 650,000 IOPS for reads and as much as 800,000 IOPS for writes. The 1TB and 500GB drives have the identical write ranking because the 2TB drive with the 500GB drive rated as as much as 460,000 IOPS for random reads and the 1TB mannequin, the quickest of the vary, at as much as 740,000 IOPS.
WD charges the endurance of the 2TB SN770M as 1,200TBW. The 1TB drive is rated at 600TBW and the 500GB, 300TBW. WD again the vary with a 5-year guarantee.
Physical Specifications:
- Usable Capacities: 2TB.
- NAND Components: 112-layer BiCS5 TLC NAND.
- NAND Controller: WD 4-channel.
- Cache: none, (HMB/host reminiscence buffer).
- Interface: PCIe Gen 4 x4.
- Form Factor: M.2 2230.
- Dimensions: 30 x 22 x 2.38mm.
- Drive Weight: 2.8g.
Firmware Version: 731100WD.
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