ive just got mine about a hour ago and put it in straight away (im like a kid with a new toy)
i upgraded from a asus radeon 4850 to a 5770 egg thingy card.
i done a benchmark with 3d mark advantage before i installed the new 5770 and here is the result's.
old card....7223
new card...8546
as you can see there is a bit of difference there and im happy with it.
im even more happy with the temps from each card.
old card idle's at 45c and on load can go up to 80c
new card idle's at 35c and on load it goes up to 55c.
im happy with it and glad i took the plunge.
some people said it was on par with the 4850 but i now know its better.
and as a bonus i got a dirt 2 key as well