- Jan 20, 2019
I had anticipated that there might be issues with the riser cable in my Phanteks Shift combined with my 5700XT and the X570-I mobo running at PCIe 4.0 speeds but the way it manifested was interesting. I had the 5700XT running on the cable with my X470 mobo with the current AMD drivers with no issues. Once I swapped out to the X570 mobo and reformatted everything the computer would load windows and do all the updates (PITA BTW) but then when installing AMD drivers that's when the fun began. During the install we all know that the screen will flicker and go blank while the drivers are loaded, but mine would shut the PC off. DEAD OFF. Power it back on and it would post, start to load windows and turn off again. So I had to get into the BIOS and set the PCIe to gen 3 and it all works fine now. I just wanted to give a head's up about this so if anyone running a riser cable (not rated for PCIe 4.0) you might have strange issues and will need to force the mobo to gen 3 to get it to work. I had called Phanteks about it to see if they had tested the riser at those speeds and they said no, so I told them I would give them feedback about my setup. Going to call them today and let them know the results.