Originally Posted by JMTH
Ok I had a chance to look at everything. you should change the SLI/X-Fire switch to X3. That should fix it. Just to make sure though, you have a RVE10?
Your calling the Slots PCIe 1-4, but they are actually called what I have listed below correct?
PCIe 1 = PCIeX16/X8_1
PCIe 2 = PCIeX8_2
PCIe 3 = PCIeX4_1
PCIe 4 = PCIeX16/X8_3
So this is an old image of my setup. I've got a Rampage V Extreme (original) with two 1080ti populated in the top two red slots. I've had a sound card and a 10 GBE network card populated in the bottom two red slots. When I had pulled out the 10GBE card, and slotted in the thunderbolt card, it was in the fourth red slot. I should have the correct number of PCIe lanes the M.2 takes 4x and the 4th slot takes 4x when both are enabled. In any case, it doesn't matter if the Thunderbolt card is in the 3rd or 4th red slot, it's always in a boot loop.
The two GPUs are going to be in the top two red slots no matter what because of the way it's piped up. The thunderbolt card doesn't seem to work in any of the remaining slots. It causes my system to reboot until I pull the thunderbolt header cable. Then it goes back to booting just fine.
Update: I plugged in the Gigabyte Thunderbolt 3 card and the moment I plug in the thunderbolt 3 header and toggle the bios to enable Thunderbolt, it throws the computer back into a reboot loop, just like the Asus ThunderboltEx 3 card. I don't think this is a TB card issue, I think it's more of a RVE or bios issue...
Even if I flip the dip switch to disable the 2nd GPU, it still doesn't make any difference in the boot loop.