Microsoft DirectStorage will work with PCIe 3.0 SSDs


Microsoft has revealed that its much-anticipated DirectStorage API for PC will help PCIe 3.0 NVMe drives in addition to PCIe 4.0 SSDs. The data got here out of a presentation to builders on the Sport Stack Reside 2021 occasion—a useful Redditor who attended posted a number of the slides from the discuss. The precise presentation must be posted quickly, in line with this DirectX Developer Weblog

It was usually accepted that DirectStorage, which streamlines transfers between your SSD and graphics playing cards, can be restricted to the very newest, quickest tech, so that is stunning albeit very welcome information. Observe that it will not work with SATA drives although, as they merely aren’t quick sufficient for what Microsoft has in thoughts.

That is excellent news just because there is a a lot larger set up base of PCIe 3.0 drives—PCIe 4.0 drives had been restricted to AMD’s Ryzen 3000 and 5000 platforms till Intel launched Rocket Lake, on the finish of final month. A machine operating a PCIe 4.0 drive will probably be quicker at transferring knowledge throughout, which may equate to quicker load instances, though we’ll have to attend and see what video games builders make of this.

(Picture credit score: Microsoft/Reddit)

Microsoft DirectStorage is notably totally different to the idea put ahead by Nvidia with its RTX I/O API, in that it copies the compressed knowledge throughout to system reminiscence earlier than copying to the GPU VRAM. As soon as within the graphics card VRAM, the GPU can then decompress the info a lot faster than the CPU can. Nvidia’s answer works in largely the identical means, though bypasses the system reminiscence fully, and copies the info straight from the drive to the graphics card. 

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