Hello everyone, first time poster here. Thanks! My question is this: I want to upgrade to 7970 crossfire from my single 7970 setup, and I want to overclock this setup to get the most out of it. I currently run a stable 1200Mhz overclock on my 7970, and am happy with this, but would love to know if I can hit around 1100 on a crossfire 7970 setup. Heres my PSU: Corsair Enthusiast Series TX 850W V2 High Performance '80 Plus Bronze' Power Supply. I am aware this PSU can happily handle two 7970's at stock clocks, but how would it cope overclocked in crossfire? This review came to my attention and shocked me- big time: http://www.tweaktown.com/reviews/45...o_cards_in_crossfire_overclocked/index16.html. Others say that overclocking a crossfire 7970 setup should pose no problem for any decent 850W PSU, but this graph shows otherwise. I also run an i5 2500k @ 4.5Ghz. Will my power supply bottleneck my overclocked setup? Thanks for any help!