WD is tightlipped when it comes to revealing information about the hardware that powers the Black SN850 and didn't divulge many details about its next-gen controller when questioned.

SN850 review - Tech Advisor WD Black SN850 review - Tech Advisor

Instead, holes have been cut through the sides allowing air to circulate and significantly increasing the surface area.Having just crowned the WD Black SN850 1TB as the best performing flash-based SSD we've ever tested, we of course are hungry for more. depending on which chipset you are on the second nvme may be pcie gen3, so you wouldn’t get the full speed. It has to match 600TB and 1200TB values for the 1TB and 2TB drives with its SN850 brothers but now includes the whopping 2400TB capability of the 4TB drive.

Next Level Gaming Storage with WD_BLACK SN850X NVMe SSD

Due to a level of system maturity, to date we haven't tested an E18 drive, but our first Phison E18 SSD sample arrived yesterday. He offers a genuine, no-nonsense perspective, helping consumers make informed choices in the ever-changing world of technology. Supreme performance is best served cold with the WD_BLACK SN850 NVMe SSD, featuring an optional heatsink model so your PC doesn’t bottom out when you’re at the top of your game (heatsink model only).

Scaling up to 96 wordline layers means using a total of 109 layers, including dummy gates and selectors in this instance, which is less efficient than Samsung’s V-NAND, which has yet to leverage string-stacking at up to 128 worldline layers (136 total layers). is a really awesome design that has 24GB as a Static pSLC Cache with almost 580 GB reserved as dynamic which shrinks as the drives fills up.