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Higher PCI-E bus frequency = Higher OC?

Last response: in Graphics & Displays
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March 8, 2009 10:31:52 PM

Hey guys;

Currently I have my Asus 8800GT @ Core: 700mhz; Shader: 1705mhz; Mem: 1030mhz(2060mhz effective). You all know 8800gt stock speeds, and I cant say it's a bad OC at all. This brings my 3dmark 06 score up from 11k to 13k(almost 14k actually). That's breaking into 9800GTX+ territory right there.

This is as far as the card will go while being stable, apparently. At least @ stock voltages. I don't really know how to increase my GPU voltage, and I don't think I have the know-how to do it without breaking it Is there an "easy" way to do it?


Apart from that, I would like to know something. Would increasing the PCI-e bus in the BIOS help with a higher OC?

I keep the PCI-e bus @ the normal 100mhz, but would pushing it to 105 or so help in any way?

Basic PC specs:

Asus P5Q Pro

E8400 @ stock (no need to OC yet)

ASUS 8800GT Glaciator

4GB RAM DDR2 800mhz - Transcend
March 8, 2009 10:39:15 PM

pushing it up to 105 might bsod you lol, my went to like 125 then it broke :( 
not really broke but bsod
you shouldnt change voltages in a gpu i dont even think you can, i wouldnt mess with that stuff
March 8, 2009 11:34:09 PM

It's been a while but I had my 8800GTX OC'd about as far as it would go and ran 3dmark. Then I saw on a site where they were advocating a 115 PCI-E bus speed out of the box for my Asus X48 board. At 115 I got a significant improvement in 3dmark scores. In the end I ultimately settled at 110 which has been solid.

I wouldn't say it "helps" GPU overclocking but improves performance in of itself.
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March 8, 2009 11:38:26 PM

I doubt it. There should be enough bandwidth on the PCI-E bus already. It will also reduce stability.

-mcg
March 9, 2009 2:20:50 PM

nightsilencer said:
Hey guys;

Currently I have my Asus 8800GT @ Core: 700mhz; Shader: 1705mhz; Mem: 1030mhz(2060mhz effective). You all know 8800gt stock speeds, and I cant say it's a bad OC at all. This brings my 3dmark 06 score up from 11k to 13k(almost 14k actually). That's breaking into 9800GTX+ territory right there.

This is as far as the card will go while being stable, apparently. At least @ stock voltages. I don't really know how to increase my GPU voltage, and I don't think I have the know-how to do it without breaking it Is there an "easy" way to do it?


Apart from that, I would like to know something. Would increasing the PCI-e bus in the BIOS help with a higher OC?

I keep the PCI-e bus @ the normal 100mhz, but would pushing it to 105 or so help in any way?

Basic PC specs:

Asus P5Q Pro

E8400 @ stock (no need to OC yet)

ASUS 8800GT Glaciator

4GB RAM DDR2 800mhz - Transcend


I experiment a lot with my system and I reload the OS more often than necessary probably. Anyway it got old always having to install something to allow me to OC it after every install. I eventually just flashed the BIOS with my OC'd settings. When I did that I noticed that the NiBiTor program I used to flash allowed me to adjust the GPU voltage from 1.0v to 1.1v. I was able to up my OC from 715 to 725 with the 1.1v to the GPU. I could go higher, but I felt safe keeping the card running at 725 with my HR-03 GT.
!