You guys...let someone who HAS the 6800 do the talking
. Well I got the GT for the reason that it was $100-200 cheaper than the Ultra. The fact is, the GT is a just an underclocked version of the ultra...well I overclocked it and TADA!!! It's now faster than the stock Ulrta. HOWEVER and cappy said, the Ultra is going to be cooler and more stable to overclock even more. Get the GT, way better deal.