Yes, Other than the system tests above I have not really pushed it yet.
Though during one of the tests my UPS started alarming. I guess a Belking 1200 VA is not going to be enough for this monster when it really starts to pull power.
Replace that piece of crap (it will work just fine, but this looks cooler) with this EVGA Pro SLI Bridge, which is for dual slot spacing (80mm). If your cards are 60mm apart (from finger to finger), get the 2-way SLI bridge.
i really wish that graphics card manufacturerors move the power inputs on the cards from the "top" of the card to the side. I think this would clean up the looks of soo many towers.
my gripe is that most of the people who are ordering graphics cards of the size "requiring" the power inputs to go on the top of the card but most (i would guess) have cases large enough to accomodate an alternate location of the power inputs for a better aesthetics.