oc ing the pci-e bus - Overclock.net

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post #1 of 7 Old 03-07-2008, 07:38 PM - Thread Starter
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mine is 2500 on the nb and sb, but iv never messed with changing it, any of u guys mess with it and did you see any noticeable performance gained
also how much can one expect to oc the 2 buses

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post #2 of 7 Old 03-07-2008, 07:51 PM
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If your system is stable do not change these settings. It is possible to damage the board if you raise these settings too high. I tested this about a year ago and learned the hard way. I figured since nTune had a way to OC the PCI-E bus it couldnt be bad.

With that said some people raise the frequency in the BIOS to help stability. It will be listed as 100MHz under system clocks. You might try 105 or 110 max, but again that would be just for stability and offers no performance gain whatsoever.

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post #3 of 7 Old 03-07-2008, 09:26 PM
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Your PCI bus is 2500?!

Uh, isn't it usually 33 or something?


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post #4 of 7 Old 03-07-2008, 09:27 PM
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Quote:
Originally Posted by Perry View Post
Your PCI bus is 2500?!

Uh, isn't it usually 33 or something?
Usually it is 100.
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post #5 of 7 Old 03-07-2008, 09:28 PM
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2500?

Huh?
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post #6 of 7 Old 03-07-2008, 09:28 PM
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go ahead and change them when i bench i run mine at 118mhz instead of 100 ya ntune says its 2500 but infact its really 100. so he is reading the wrong part.

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post #7 of 7 Old 03-07-2008, 09:38 PM
 
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Depending on what type of chipset you have adjusting the PCI-E freq can be really beneficial to boosting graphics performance and HDD speed [for SATA/2]...but go too high and you can do permanent damage to your gpu and/or corrupt your HDD data. [Both of which have happened to me before ]

Nvidia mobo's are especially nice for fine tuning the NB<->SB link speed [HTT freq] and the speed of the SB chipset is also independently adjustable. Tweaking these in conjunction with the right NB latency can bring some really nice scores/performance.


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