However, the ultra use a new revision of G80 silicon that allows for higher clock speeds. So, this means that the Ultra can be overclocked to higher speeds than an overclocked GTX
Why? You can volt mod an 8800GTX and add a water block and overclock it higher a lot higher yourself than an Ultra for 200 bucks less while still being cooler temps.
Just a stupid idea..and if your not an overclocker than its still a horrible idea as the performance increase is not enough at all to go from an 8800GTX