I have a 4tb WD nvme gen 4 slotted into m.2_2 it's reading a connected speed at PCie 3.0.
I have a 4090 with another 2 tb WD slotted in m.2_1 and its showing 4x4 speeds fine.
Can anyone explain what is going wrong here?
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My understanding that my boot on m.2_1 will run 8x8 which is probably negligible with a 4090. Which i'm ok with. may change that one later.
But you are saying that it's splitting it 3 ways as is since i'm using m.2_2 also?
Not sure about your board, but check the manual. On my 690 Hero, the M.2_2 slot only supports Gen 3.
Bios updated and intel firmware updated?