Western Digital Releases SN770: DrAM-free Design Writes 4900MBs

On February 3, the core research institute announced that Xishu released the main cost-effective PCIe 4.0 SSD product - SN770. The SN770 uses the same DRAM-free design as the SN750 SE, but the speed is much higher than the latter, with a maximum sequential read speed of 5300MB/s and a write speed of 4900MB/s. The latter only has the latter continuous reading and writing up to 3470MB/s and 3000GB/s, respectively.

Edited by the Institute of Core Research

Although there is no DRAM cache, the SN770's 4K random read and write speed is as high as 800K IOPS and 740K IOPS, making it one of the fastest DRAM-free SSD products on the market.

The SN770 offers a total of 250GB to 2TB of capacity options, including $59.99 for 250GB, $79.99 for 500GB, $129.99 for 1TB, and $269.99 for 2TB. Compared to the SN850, the 1TB version is $30 cheaper, and the 2TB version is $50 cheaper. In terms of durability, WDsoft provides a 5-year warranty for the SN770, supporting 0.33 full writes per day. The 250GB version has a write life of 200TBW, 500GB is 300TBW, 1TB is 600TBW, and 2TB is 1200TBW.

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