Originally Posted by Topgearfan
No I have not solved it I don't think.
How do you have your voltage set up is it at a constant voltage? Mine stays at around 1.3 even at idle since I set it to manual. I have C1E enabled and of course speed step as well.
Some of the people I saw with really high scores on SLI did have ~4.8-5.0ghz cpu's if I remember from what they put in their sig rig info.
edit: OOps, forgot.. Voltage for OC for Benchmark on CPU, I set to manual as well (constant, no throttling).
I've just tested Valley with OC of 4.0, 4.2 & 4.6 constant voltage, NO C1E or speed step to make sure I always get max performance while benchmarking.
Drivers 314.22 maxes my score to 72.4-72.8 (had much better results with 320.39 & VBIOS) but the point of the tests were to see if the CPU made a difference in Single card & from what I see, it's very minimal. I guess that SLI is bottlenecked by a CPU from your tests. I also tried without background tasks (AV, AntiSpyware, Task manager, GPUz, PrecisionX -- all removed) with only .1 fps difference lol
So I ran all test 2-3 times, and they ALL gave me the same scores down to the decimal! I guess keeping a performance OC (no C1E, etc) makes the tests more stable in my case.
4.0Ghz CPU = 72.2
4.2Ghz CPU = 72.4
4.6Ghz CPU = 72.6
I don't dare test the CPU @ 5.0Ghz right now, but it won't affect my scores by much based on what I've seen so far. Perhaps with 320.39 or even 326.01 (Win8.1) which I'll try later @ 4.0Ghz
core 1176, mem +650. drivers 314.22.
NOTE: most of the scenes varied between ~120fps & ~60fps except scene 11 which brought my fps to 50(on all CPU speeds), BUT scenes 12+ went back up to 60-70-80 depending on the scene... I didn't get stuck on 50 on 12-15.
For the CPU OC, they've got a 5Ghz club here with tons of info... I read a bit earlier to see if I dared, but being on Air (Hyper 212+), @4.6 1.320v, the CPU went up to 66c on valley which isn't that bad, but I figure I'd need 1.450-1.5v for 5Ghz so until I get a H100i or equivalent (next build probably), I'll stick to 4.1-4.4 Turbo boost OC with all the power saving features on.
I feels like you've got a lead on the issue though... if I read/find other information on the web, I'll let you know (it's got me curious since I might eventually go SLI as well).note to forum moderator: if you want to blast me for writing chapters every time I post, feel free lol (just noticed what a blabber typist I can be)Edited by Melk - 6/29/13 at 3:40pm