Hi, I have a Strix X670E-E motherboard recently and intend to install some cards that uses all the PCIE slot. I understand the PCIE slots can be able to configure as either x16/-/x4 (PCIE16_2 disabled), x8/x4/x4 (all slots available) or x4/x4/x4/x4 for PCIE16_1 and PCIE16_2 will be disabled. My question is why are the 4 PCIE lanes missing when configuring as x8/x4/x4 and where did they go or reserved for?
Asus launched the RTX4060ti with m.2 slot recently, wouldn't it makes sense to configure the BIOS bifurcation to be x8/x4 for PCIE16_1 and still leave x4 for PCIE16_2 and x4 for PCIE16_3 (which is always available due to wiring directly to chipset)? I tried the latest BIOS 1807 that supports the "GPU with m.2" option for PCIE16_1 but noticed the PCIE16_2 is still disabled.
