Originally Posted by stuup1dmofo
A 7970 can only keep up with CF 6950 when it is overclocked, otherwise the CF 6950 is faster. Now if you OC the the 6950s, then it will be a good amount faster. I too have CF 6950 and find that there is pretty much no game right now that I cannot play at max settings at 1920x1080, though I would like a Sapphire Toxic 7970 just to reduce the heat and avoid any future crossfire scaling problems.
Doesn't matter if they are slightly faster a single card solution is always better. Always.
Not to mention the HD 7970 has PCIe 3.0, more VRAM, will use less power, be much quieter and cooler and at such a high resolution the first two will both help out. The HD 7970 will be a much much smoother experience even if it's outputs slightly less frames. All multi-GPU configurations exhibit micro-stutter when put under load and two weaker cards like he's using although he might not completly notice it, will suffer from it and performance will be taxxed slightly, not to mention two weaker cards always produce more erratic performance, where as a single stronger card may produce slightly lower average but the difference between highs, lows and the average is much tighter and smoother overall.
Not to say his set-up isn't adequate but a single stronger card is always a better option and can't be comapred to two weaker cards even if they offer slightly better performance. GHZ Edition HD 7970 would be a great upgrade if it's decided he wants to because who knows when 8000 series will be out. Just get a card that has massive overclocking potential and a kick ass cooling solution to pro-long your upgrade and make it more worth it.Edited by thestache - 6/20/12 at 8:01pm