Asus P8Z68-v-Pro mobo
16gb G.Skill DDR3 1600
Intel 510 series 120gb SDD (For OS)
WD 1TB 7200 rpm HD (For game data)
Antec 900w power supply
2x EVGA GTX680 FTW+
Quick summary, I've been having an issue for a while with momentary freezing (less than a second) accompanied by a buzzing sound while gaming. It happens randomly averaging maybe once every 10-30 seconds, sometimes happening multiple times in a row. Load/temps don't seem to matter that much. Actually the game that does it the worst is Fallout New Vegas and that hardly taxes the system at all.
I think that it is an SLI issue, since when I run only one of my video cards in either PCI-E slot, I have absolutely zero issues with either card. I've been scouring the web for an answer without much success so far. Any advice would be greatly appreciated!
Ok, just to wrap this up, the problem is fixed now. About a month ago a new graphics driver update came out and the momentary freezing problem went away. So apparently it was just a driver issue that was fixed with an update. Thanks for the responses guys!