The 6800 Ultra *is* the 6800 GT. The only difference is the added power dongle to help the card deal with the increased core speed. If you run the "auto detect" from nVidia's Coolbits app (which is the reg entry to unlock the clock speed setting in nView) you'll see that it will detect its optimal core speed within a few mhz of a 6800 Ultra.
http://oc3dmark.octeams.com/tip02.html
Check it out :P
Sure my card might only last 4 years instead of 6, but I've found the life of a vid card to be about 4 years anyways. And since the card was built for the clockspeed, I can't resist.
Either ways, quality choice on the components.