Speed inquiry about crosshair in Crosshair VIII Extreme
Speed inquiry about crosshair in Crosshair VIII Extreme
You're asking about the configuration and purpose of the M.2 slots on your board. The bottom two slots (M.2_2/3) provide PCIe 4.0 but sacrifice half the lanes for the x16 slot. It seems these slots are likely used for CPU support rather than high-speed storage, which explains why they're disabled for GPUs. The documentation mentions compatibility with certain RAM types and chipset versions, suggesting flexibility in configuration. Your observation about using the DIMM in a way that aligns with the CPU is correct based on the available options. It's good you're thinking this through!
It will halve the GPU lanes. Choices. https://www.cgdirector.com/guide-to-pcie-lanes/ Most recent GPUs using PCIe 4.0 should fit in an x8 port just fine. Only the top-tier models may experience some slowdown.