Overclocking PCI Express Bus

[borealnw]

Hello all and thanks in advance for your input.

I am wondering if any of you mad OC guru's have found gains in Ocing the PCI E bus? I host a thread with my clan and found a member who is using Ntune ( a tool I do not use) to get higher PCI E bus speeds. 2500 to 2850. How does this effect those of us using SATA and is (Ocing in BIOS) worth looking into for better performance.

Lets take for example a system like this

A8N32 SLI
4800 2X
OCZ 4000 Platnium
X2 XFX 7900 GTX ultra's
X2 Raptors
TT Armor Case
OCZ 700 Watt GE PSU
All on Air.

A side note has anyone found a way to break the 2600 Mhz. barrier on air with the 4800? If so settings would be appreciated.

 

[Arcygenical]

The only reason to overclock the PCIe bus, would be if your CPU OC was unstable..


Throwing the PCIe freq up to 101 or 110 can sometimes net you 25-100 more FSB on the CPU, if you have a wierd board.

The Asus P5B-VM goes from a wall of about 280 to a wall of about 340 by pushing the PCIe bus to 125...

But that's about it

 

[ziddey]

The only reason to overclock the PCIe bus, would be if your CPU OC was unstable..


Throwing the PCIe freq up to 101 or 110 can sometimes net you 25-100 more FSB on the CPU, if you have a wierd board.

The Asus P5B-VM goes from a wall of about 280 to a wall of about 340 by pushing the PCIe bus to 125...

But that's about it

the whole thing about the p5b-vm is that the pcie-lock is not there, or that it doesn't work right like the 945g's where it actually allegedly gets underclocked as you bump up the fsb, so it needs the artificial rise to neutralize it. As for the p5b-vm, i'm still too nervous to try it, since 300+ is still hit or miss, even with the pcie manipulation. And the g965 chipset has a limitation around 340fsb as well anyway as set by intel supposedly, which makes it really unfortunate.