Anyone tried raising PCIE bus for higher OC?

[imported_Shaq]

I have heard rumors that raising the PCIE bus can help video cards OC higher. I've searched here and other sites but can't find anything definitive. For instance, some posters say to stay below 125Mhz to avoid problems with PCIE peripherals, but no test results. So I'm just wondering if anyone has tried it before I start messing with it. And is it safe to run below 125 all the time?

 

[n7]

Hardcore benchers run it around 120, etc.

But stability can be an issue, so i've never had any interest in trying it.

But go ahead, & let us know the results

 

[Bill Brasky]

Two years ago when I was a huge n00b, I thought that's how you oc'ed a video card. Anyway I changed it from 100MHz to 101MHz and my pc didn't boot... so I cleared cmos and never touched it again. Worst comes to worst you'll just have to clear cmos so I say try it and report back!

 

[Toadster]

Originally posted by: Zaitsev
Two years ago when I was a huge n00b, I thought that's how you oc'ed a video card. Anyway I changed it from 100MHz to 101MHz and my pc didn't boot... so I cleared cmos and never touched it again. Worst comes to worst you'll just have to clear cmos so I say try it and report back!

i have my PCIe bus clocked to 109 (highest my board will go)... runs like a champ!

 

[PCTC2]

doesn't it just increase the bandwidth of the PCIE bus? It's not like it's bottlenecked yet or anything....

 

[imported_Shaq]

I found some info at Ocforums that talks about it. It seems that up to 115 is safe and can help, but some models more than others. So I guess I'll up it to 115 and see if it OC's any better. My board actually goes up to 150, but I think I won't go quite that high even though a couple of you would like to know the results. LOL

 

[Bill Brasky]

Originally posted by: Toadster

Originally posted by: Zaitsev
Two years ago when I was a huge n00b, I thought that's how you oc'ed a video card. Anyway I changed it from 100MHz to 101MHz and my pc didn't boot... so I cleared cmos and never touched it again. Worst comes to worst you'll just have to clear cmos so I say try it and report back!

i have my PCIe bus clocked to 109 (highest my board will go)... runs like a champ!

Have you tried running any benchies to see if it makes any difference? I'm quite curious since I was also under the impression that the pcie bus wasn't a bottleneck.

 

[n7]

Originally posted by: Zaitsev
I'm quite curious since I was also under the impression that the pcie bus wasn't a bottleneck.

It's not.

But it apparently gains a few extra 3DMock points, hence why the hardcore benchers waste time with it.

And why i don't.

 

[Toadster]

Originally posted by: Zaitsev

Originally posted by: Toadster

Originally posted by: Zaitsev
Two years ago when I was a huge n00b, I thought that's how you oc'ed a video card. Anyway I changed it from 100MHz to 101MHz and my pc didn't boot... so I cleared cmos and never touched it again. Worst comes to worst you'll just have to clear cmos so I say try it and report back!

i have my PCIe bus clocked to 109 (highest my board will go)... runs like a champ!

Have you tried running any benchies to see if it makes any difference? I'm quite curious since I was also under the impression that the pcie bus wasn't a bottleneck.

can't say it attributes to a ton, but you figure - 109.24MHz > 100MHz - so it does account for a 9% increase

haven't done a non-clocked bench vs. a clocked bench though, just always ran it at 109