XFX Black Edition 7970 1000mhz core 5700mhz mem clock factory OC
Corsair TX750 Enthusiasts 80+ PSU
Corsair H80 Processor cooler
Corsair Force 3 SSD 120gb
WD caviar green 2tb HD
WD caviar blue 640gb HD
Seagate Barracuda 1tb HD
Aerocool V12XT touch screen fan controller
Pioneer DVD Writer drive
3 200mm led fans and one 230mm fan in a coolermaster HAF X case
2 blue cathodes
Raser deathstalker ultimate keyboard
Raser Black Mamba 2012 edition mouse
Gioteck EX-05 Gaming headset
Microsoft Xbox 360 wireless controller
Im upgrading my system early next year to asus extreme v, corsair neutron ssd 240gb, i7 3770k and 16gb corsair dominator platinum 2133mhz ram and ocz 1200w psu 80+ but im getting another xfx black edition 7970 to crossfire at the end of next week.
my question is, will my psu at the moment power the system i have under load for gaming?
Technically speaking, yes, your 750W power supply should be capable to power both your 7970's. Most of your components seem to be somewhat power friendly.
I am unsure however if your power draw is higher than expected due to the overclocking, but I estimate you have at least ~100W clearance after the 2nd GPU, which is way more than OC'ing the CPU & RAM could do.