I have 2 GTX 680's and when I play Far Cry 3 on max settings it skips around more than a little school girl... Is it normal to have such a choppy frame rate? I've already verified that SLI is enabled, both GPU's are working but they are maxing out even on a single display... Resolution is 1920x1080.
what cpu do you have. you need a really powerful cpu to keep up with those vid cards. and what motherboard, your not running one of the cards in a 4x slot are you? and power supply/ maybe not getting enough power. and then there is microstuttering, which can be fixed if you induce a frame rate cap to the lowest expected fps.
850 Watt corsair power supply and an FX-8150 overclocked at 4.6GHz... The CPU will be replaced in a few weeks with a 3770k and the motherboard will be swapped with a Sabertooth x79 I believe it's called. Still it's the GPU's bottlenecking not the CPU.
Second half of the video. Do that and most problems should be gone. I'm only on a GTX 650 Ti and a AMD Phenom X4 2.3Ghz and I can play on Ultra DX11 with hardly any stuttering. I was getting choppy performance before I changed the driver settings to the ones in this video. Hope it helps. http://youtu.be/9AFV4Me308w
First of all , you said your getting a i7-3770k , you need to understand that this is a LGA1155 socket so a x79 board WILL NOT WORK. Get the Sabertooth Z77 instead of X79.
Then with 2 GTX 680 SLI , and a i7-3770k. You should experience better performance. If there is a need , try overclocking your i7-3770k , make sure to get a good heatsink before overclocking.
If your intending to game on tri-screen , 2 GTX 680 would be more than enough unless you really want super high frame rate. Where a 3rd card would matter but usually SLI with 2 cards is enough for triple screen gaming.