Quote Originally Posted by blossa View Post
I have run ~140MHz with same graphic cards and same RAMs on X38 and X48 boards. I have tried IDE, SATA and SATA-connected SSD-drives (both RAID and not)

So I guess It is either board or CPU?

A simple way to find out is to ask people to test, let's say 110MHz PCIe with ATI 3850, 4850, 4870 4870x2 or nVidia 9600GT on X58 eXtreme or UD5...
now that is interesting.. maybe the pci-e voltage needs to be adjusted as you up the freq? I know I tried 101 and my crappy x-fi went offline in windows, but everest was able to see it still.. kind of interesting.. anyways...