http://www.newegg.com/Product/Product.asp?Item=N82E16814140067
thats the same apollo card i believe from newegg
long story short: many many people have RMA'd this card. but then there have been a bunch of people that got to unlock all of their pipes (to 16) and then all of ther vertex's (to 6) on this apollo. good news is - that you can keep RMA'ing your card it seems. bad news is that it seems like this card is not a sure bet for sucess.
but the 6800 is way better than the 6600gt it seems bcs they have different cores, and u can unlock the 6800