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3DMark11 / Heaven scores 6970 x-fire - How do they look? - Page 2

post #11 of 15
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I need to mess with them. I need to clock one card at a time. One of them is unstable at higher volts. The cards do not get hotter then 35C while gaming so i was hoping for more clock speed.
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post #12 of 15
Quote:
Originally Posted by Hydrored View Post

I need to mess with them. I need to clock one card at a time. One of them is unstable at higher volts. The cards do not get hotter then 35C while gaming so i was hoping for more clock speed.

Yea, i found a reg trick that allows you to set the max clock in CCC. Often MSI AB / Trixx will give you BSOD so if you use AB to just set the voltage to what you want it and then set all the cards to the clock you want in CCC.

See here for the reg trick. If you click the link in the post and download the little program from techimo and run it, then set what you want to have as a max clock in CCC, it creates a reg file that you can merge with you reg. This solved a lot of problems for me.

BTW: Does someone know if running different clocks on the gpu's will give a boost? In programs such as AB and Trixx the clocks are synced and you are limited to the slowest card's clock. In CCC you can set the clock on each card and it, so you can run them at each cards max clock.
post #13 of 15
Quote:
Originally Posted by Eggy88 View Post

BTW: Does someone know if running different clocks on the gpu's will give a boost? In programs such as AB and Trixx the clocks are synced and you are limited to the slowest card's clock. In CCC you can set the clock on each card and it, so you can run them at each cards max clock.

My experience when I had xfire 5850's was ... no. I tested using the Far Cry 2 benchmark, with one card at like 725/900 and one at 925/1000, and got the exact same FPS as I did with both cards at 725/900 .. and it didn't matter which of the two cards I overclocked.

I confirmed that the clocks were matched to my settings according to the AB graphs, but the slower card would run at 99% usage, whereas the faster one would run at like 87% usage.

However, that was a couple years back, older drivers, old architecture ... but it's pretty dang easy to test it yourself wink.gif

Also, I believe AB will allow you run different clocks on each card, you just have to uncheck 'sync similar GPUs' and use the dropdown to select which card you're adjusting.
    
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post #14 of 15
xfire 2 MSI Lightnings:

3dmark11msi6970lightnin.jpg

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post #15 of 15
Quote:
Originally Posted by brettjv View Post

My experience when I had xfire 5850's was ... no. I tested using the Far Cry 2 benchmark, with one card at like 725/900 and one at 925/1000, and got the exact same FPS as I did with both cards at 725/900 .. and it didn't matter which of the two cards I overclocked.
I confirmed that the clocks were matched to my settings according to the AB graphs, but the slower card would run at 99% usage, whereas the faster one would run at like 87% usage.
However, that was a couple years back, older drivers, old architecture ... but it's pretty dang easy to test it yourself wink.gif
Also, I believe AB will allow you run different clocks on each card, you just have to uncheck 'sync similar GPUs' and use the dropdown to select which card you're adjusting.

Ahh, could be regarding AB have not used it alot. Could be that you see some gain in synthethic benchmarks with different clocks. I'll do some testing once i get the new cpu's to bind.
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