and I wrote this baby up on another forum in reference to ATI Versus Nvidia, both SLI/Crossfire and Non SLI/Crossfire
I actually read a review that sum1 posted on the HLP forums and the RAdeon 9800XT (No, not the X800, the 9800XT) was BEATING the Geforce 6800 GT!!! its pretty amazing, of course at this point, the drivers are better, so they are probably the same going speed right now.
As for Nvidia getting better speeds by linking two cards together, yea thats how they got away with it, and well if you'll notice, SLI is not that great of a contender. Considering that you need TWO IDENTICAL CARDS (Im emphasizing here, not exclaiming), with TWO IDENTICAL BIOSES, and the cards CANNOT be MIXED AND MATCHED, they must be the SAME EXACT CARD from the SAME MANUFACTURER. Crossfire screwed that and now any card thats an X800/X850 Series works with crossfire, regardless of manufacturer.... Crossfire is also better than SLI, considering it works with ALL games, SLI Doesnt support all games. It costs about 800 bucks, to build a pretty killer gaming machine with a 6800 (and I dont like Nvidia) for 800 bucks.... NOW, lets look deeper. TO BUY (and yes this is how Nvidia is where its at right now in the market) TWO, not one but TWO Geforce 7800GT's would cost you, 800 bucks, buying from Newegg JUST FOR VIDEO CARDS. Now lets see, two Geforce 7800GTX's would cost you 1,000 dollars for SLI, again JUST FOR VIDEO CARDS. COULD YOU IMAGINE spending that much money on just TWO video cards? I cant... thats pretty insane. I mean at its cheapest, ATI can crossfire you for about 300 to 400 dollars, (two X800GT's, or an X800GT and an X800 Pro). If you ask me, for the performance-to-dollar ratio your getting, i dont think that SLI is well worth it. Heres some crossfire versus SLI reviews
Link:
http://www.cdrinfo.com/Sections/Reviews/Specific.aspx?ArticleId=14474SO read that and tell me what u think!