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The 4th card is causing my system to freeze it seems. It was freezing when opening some web pages or sometimes when I'd go to move the mouse. I removed the 4th card and no more freezes.
Looking at threads of other people with 4 GTX 680s (and their posts comparing 3-way vs. 4-way scores) it looks like as they overclock their cards the Combined Test score goes down unless they also overclock the CPU more.
I still have no idea why as I added GPUs I am losing my ability to OC the...
Not sure. Is there any you would recommend?
If the GPU test scores were excessively low I would be more suspect, but the difference between the 3-way and 4-way scores on 3DMark11 GPU scores is very very nice. That is what makes the loss of performance between 3-way and 4-way on Combined Test...
I submitted a thread to 3DMark11 forum at Futuremark. I'm surprised that they don't let you post a thread without a moderator looking at it first. Sketchy..... It is definitely a bug of some sort I think between SLI modes. It doesn't make sense for my Combined FPS to decrease even when raising...
I'm still trying to get my head around it...
Almost all the other scores are much higher for the 4-way setup vs. the 3-way, but the Combined Test is lower.
I was able to get the cards up to 50 clock offset in 4-way and the Combined Test is 52.99 which is still lower than the 57.13 on the 3-way...
Here is the comparison with the same CPU speed and 4-way vs. 3-way:
GraphicsTest1:
166.95
142.51 FPS
GraphicsTest2:
191.28
148.17 FPS
GraphicsTest3:
242.3
179.77 FPS
GraphicsTest4:
109.69
86.9 FPS
PhysicsTest:
47.22
47.35 FPS
CombinedTest:
52.87
57.13 FPS
Any idea why the combined...
Doing a comparison of the 3-way vs. 4-way, my combined score FPS was higher with the 3-way. Something is definitely is not right with the added 4th card in my setup... Either it is a bad card or a bad slot on my mobo I think.
I raised the CPU speed to 4.7 GHz and was able to get the combined score up almost 600 points. I guess the combined has to do with how much people running 4-ways are overclocking their CPUs compared to mine...
Thanks, but I'm wondering about offset scaling for overclocking. It seems the more cards you add, the less you can raise the clock offset with the 680.
Here is the weird part. All my scores are above the target scores except the combined score (see below). Why would my combined score be so low? It wasn't low with 3-way...
Overall Score
My Score: P25733
Target Score: P23400
Graphics Score:
My Score: P38095
Target Score: P33800
Physics Score...
I can't get the four cards to run well at all... And the new one is letting off a nasty smell. Likewise, 3DMark11 is saying my system is running low for its specifications.
Any ideas?
How much does CPU speed effect Graphics Score on 3DMark?