Western Digital Launches their WD_Black SN770 PCIe 4.0 SSD

Shame the pricing of this SSD isn't as competitive as we would like

Western Digital Launches their WD_Black SN770 PCIe 4.0 SSD

Western Digital launches their SN770 DRAM-less PCIe 4.0 SSD

Western Digital is expanding its WD-Black line of PCIe 4.0 SSDs with a new model called the SN770, a drive that's designed to replace their older SN750 SE model by offering performance levels that are up to 40% faster and up to 20% more power efficiency. 

With their new WD_Black SN770 drives, Western Digital is using a new DRAM-less SSD controller that can deliver sequential read speeds as high as 5,150 MB/s and sequential write speeds as high as 4,900 MB/s. This drive will also be available with storage capacities of up to 2TB, unlike the SN750 SE, which maxed out at 1TB. 

This new SSD from Western Digital uses an in-house Sandisk controller, making giving this drive a different performance profile than competing SSD models. The specifications of Western Digital's SN770 SSD lineup are available below. 

Western Digital SN770250GB500GB1TB2TB
ControllerWestern Digital/Sandisk DRAM-less controller
Form FactorM.2 2280
PCIe 4.0 YesYes Yes Yes 
Sequential Read4,000 MB/s 5,000 MB/s 5,150 MB/s 5,150 MB/s 
Sequential Write2,000 MB/s 4,000 MB/s 4,900 MB/s 4,850 MB/s 
Random Read IOPS240K460K 740K 650K 
Random Write IOPS470K800K 800K 800K 
Warranty5 Years    
Write Endurance 200TBW300 TBW 600 TBW 1200 TBW 
MSRP US$59$79.99$129.99$269.99
MSRP UK£56.99 £83.99£142.99 £340.99

Western Digital Launches their WD_Black SN770 PCIe 4.0 SSD


Terrible Pricing

At the time of writing, Western Digital's flagship SN850 SSD is available for £124.98 and £239.99 on Amazon UK (Affiliate Links). As such, the pricing that Western Digital lists on their website for the new SN770 SSD should be considered as overly expensive. 

Western Digital offer their customers higher-speed SSD with DRAM cache at a lower price than their new SN770 SSD models. Right now, our recommendation to consumers is to just buy the SN850. It's currently cheaper and offers PC users much stronger performance levels. While we expect the SN770 to become available at lower prices in time, today's prices are simply too high to be worth considering. 

You can join the discussion on Western Digital's WD_Black SN770 PCIe 4.0 DRAM-less SSD on the OC3D Forums

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