Before you do an RMA, some things they wrote made me curious about the specs of your MB and M.2s.
- 970s are gen 3, but 990s are gen 5.
- 990 EVO is compatible with PCIe 4.0 x4 and PCIe 5.0 x2
- Your MB supports 1 gen 5x4 and 4 gen 4x4.
- M.2_1 shares bandwidth with PCIEX16(G5)_2 and _1.
- When M.2_1 is occupied with SSD device, PCIE_1 will run at x8 only and _2 will be disabled.
Are either of those PCIE slots in use?
If you plug in one of the 990s to the gen 5 M.2, and plug in all 3 970s, what happens?
Edited by RevGAM, 01 July 2024 - 09:48 AM.
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