I apologize if I sound rude, or arrogant, but I would like to start by saying I have an upcoming project and I would like help figuring out my best option(s). I'm going for raw power, and money is not an issue. Thanks ahead for any and all help. I'm going with a water cooled system and considering OC'ing. So far, I haven't been too successful in finding any good enough data on everything I'd like, so let me list you all what I'm considering. Here is a raw list of what I'm considering: ($909) 5970 4gb [512 (256x2 bit); GDDR5; EMem. 1200MHz; 3200(1600x2) SPU's; Core 805MHZ] ($600) 5970 2gb [512 (256x2 bit); GDDR5; EMem. 1000MHz; 3200(1600x2) SPU's; Core 805MHZ] ($209) ---CF ($420) 5850 1gb [256bit; GDDR5; EMem. 1000MHz; 1440 SPU's; Core 725MHz] ($279) --- CF ($560) 5870 2gb [256bit; GDDR5; EMem. 1200MHz; 1600 SPU's; Core 850MHZ] ($379) --- CF ($760) 6970 2gb [256bit; GDDR5; EMem. 1375MHz; 1536 SPU's; Core 880MHz] ($214) --- CF ($428) 6870 1gb [256bit; GDDR5; EMem. 1150MHz; 1120 SPU's;Core 940MHz] As you can see, I have "CF" designating which cards I would crossfire. I know I included the prices, and although I've already stated that money is no issue, I'd still like to be (if at all possible, for the sake of sensibility) frugal when and where I can. My questions: 1) Crossfire or no crossfire? Why? 2) which would be the best "solution" in terms of raw "gaming power": either CF two cards or a single card, dual gpu solution? 3) If I were to go CF, which of these options are most scalable when OC'ing? How far could they be OC'd? 4)From what I can tell, it appears to be that putting two 5870's in CF would be a better course of action than considering the 5970 2gb or even the 4gb. Am I wrong? Why exactly? I know this is all so vague and incredibly broad; and I'm doing what I can to find out everything I need to know for the best available option, but I would really appreciate it if I could get some good input, any input, and information I can. Again, thanks for any and all help. Thanks for taking the time to read this at all, too.