Sorry.... My other ssytem specs are the following:
Mobo: Asrock Z68 Extreme3 Gen3 1155
CPU: i5-2500k 3.3GHz @ 4.3GHz (1.23v vCore)
RAM: 8GB Gskill Sniper 1600MHz
DVD: DVD-RW 24x Lightscribe
HDD: 250GB & 160GB Sata
So a pretty basic system without any power-hungry accessories. The only thing that worried me was the fact the PSU only offers one +12 25a (23a in reality) rail with a maximum draw of 276 watts.... but keep in mind that 276 watts is not only for the pcie but also for the two HDD's, the DVD, and the 3 front system fans.
Now I'm not sure if there is any power draw from the motherboard and what each GPU uses in regards to power. I don't plan to run SLi/CrossfireX due to microstuttering, the cost, and I'm worried about just running one card let alone two cards.
That said I want to know the best single card my PSU can handle excluding the *** X2 models.