**Gigabyte GA-X58A-UD7 OC-Tips-Bios-Discussion Thread**

[Sam_oslo]

What PCI-Express frequency are you using? And how much did it help?

215x21 is 10-run LinX-stable with PCIe=100MHZ .

I haven't done much testing of PCIe-effect with x21 multi, but have done some with x19 multi and:
PCIe=100MHZ .. BCLK221 boots and 221x19 is 24/7 stable too, but BCLK222 won't boot here.
PCIe=104MHZ .. BCLK222 boots and 222x19 is priemstable too,
PCIe=104MHZ .. BCLK227 boots fine and 227x19 runs some light load too, but won't get primestable, and increasing the PCIe up to 115MHZ won't help either. (This may work on other systems. I suspect this limitation is related to my double GPU (GTX 295), because i get some display-artifacts while priming with BCLK>226). I haven't tried BCLK>227 yet.

All these test are done with LLC= "Level 2", just started testing with "standard" and now the 224x19 is showing good promises for primestability with PCIe=103MHZ. This is 2 BCLK higher than before, but I'm not so very sure if this is stable, or the LLC is the reason, yet.