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SD Association Unveils microSD Express Format That Promises Transfer Speeds of Up To 985 MB/s (engadget.com)
The SD Association has unveiled microSD Express, a new format that will bring speeds of up to 985 MB/s to the tiny memory cards used in smartphones and other devices. From a report: Like SD Express, it exploits the NVMe 1.3 and PCIe 3.1 interfaces used in PCs to power high-speed SSDs. The tech is incorporated onto the second row of microSD pins, so the cards will work faster in next-gen devices while maintaining backward compatibility with current microSD tech. PCIe 3.1 allows for low power sub-states, so the cards will not only offer much (much) higher transfer speeds, but consume less power than regular microSD cards. It'll also open up features like bus mastering, which lets memory cards communicate with other components without going through the CPU first.
NAND is limited by how many chips are stacked behind the controller. microSD is limited to a single chip. This is why, even with current 90MB/s rated microsd, you still get 7MB/s speeds from it once you fill up the controller buffer. NVMe on a single chip shitNAND? lol. this is pure marketing bullshit.
We already did, twice. First was ExpressCard, which is a card version of a x1 PCIe slot. Second time was Thunderbolt, which I believe the current iteration is up to x4 PCIe.
And yes, I believe there are Thunderbolt RAM attacks though because of the IO controller, it's somewhat mitigated.