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Tri SLI uneven GPU usage.

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Joined
10 Sep 2010
Posts
1,533
Location
Cornwall, England
Hello

I have a very annoying problem with my GTX570's (Tri SLI).

I'll be playing, the GPU usage will be even across all GPU's and then randomly the usage will be completely uneven, say for example GPU 1 at 80%, GPU 2 at 12% and GPU 3 at 58%...This makes the game completely unplayable, feels like 10FPS

This happens randomly, so could be fine for 20 minutes then GPU usage will go crazy and it'll be choppy for usually about 5 minutes then return to normal.

has happened on every game I've played and any benchmark aswell. Tried various different drivers, now using the latest beta's.

Any idea's ?

Thanks in advance.
 
I've decided to give my bro one of the cards, solves a problem for me and he's struggling along with a 512MB HD4870 at 1920 x 1200.

Thanks for your help guys.
 
I am running Tri GTX280's and I have never had a problem like that, could be that one of the cards wasn't happy in TRI SLI?

But... but.. They had shiny waterblocks, plenty of juice and braided cables :(
I tried to make them happy.

On a more serious note, I found out with the aid of MSI Afterburner that the cards were going to video mode clocks (about 405Mhz) randomly

This happens with 2 cards aswell ! I thought that maybe CoDBo wasn't demanding enough so I slapped on 32xCSAA, also turned off adaptive power management and its been fine so far

Just my luck that I figure it out just after I've given away one of the cards.
 
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