Well, This is my first post. I bought the 6800 limited edition from newegg last week, and got it yesterday. I OCed it to 350/1100 from the first min I installed it, and burned it overnight without any problem. Today, I decided to put some AC5 on this card (since I really like the stock heatsink, very good quality built). Oh boy, look what I found; right after I removed the GPU heatsink, I found that the original cheap white silicon thermal paste was removed, and some AC like paste was on the GPU (whoever did that did a very lousy job; there are plently white color paste left on the resistors around the GPU). This lead me to believe: These limited edition cards failed the stress test, and eVGA replaced better thermal paste to get better cooling.
Anyway, after I put on the AC5, I OC the card to 375/1200 and ran 3Dmark03; NO GOOD, the stock heatsink can't handle DDR3 @ 1200, 3Dmark03 freezed for about a sec. and the score was 7793. So, I clocked the memory back down to 1150, and got a 11037 score on 3Dmark03. The stock heatsink and AC5 are actually doing a very good job, I am now running the card @ 360/1100, and the temp is 46C idle, and 60 loaded.
Overall, I really think this card is a real good deal.
BTW, my system is A64 2800 with VNF3-250 @ 2150 1:1 memory @ 2.9V.