Quote Originally Posted by Singh400 View Post
How vital is the PCI-E freq to a stable system? How does it relate to other settings?
Well, hard to tell. For some it doesn't change a thing, for me it meant utter stability. I believe it depends a lot on how much you're stressing your northbridge. Main factors are:

1) FSB clock
2) Number of memory modules, and CLvalue. CL9 modules stress more than CL7.
3) Type of CPU. Dual core vs. quadcore.

The stress factor can be seen indirectly by the required voltage on some chipsets. My X38 always needed 0.04V more when using four modules.

Also it can depend on wheter you're using a older Core 2 CPU (65 nm) or a newer 45 nm core. They just behave differently on the frontside bus.