I got carried away and sort of made a rant, so bear with me.
Originally posted by HAVOC2k5
The key right now to the X1900XT/X vs. All current NVIDIA cards is this: ATI supports HDR & AA, NVIDIA doesn't, you can either use HDR or AA, but not both.
Thats not entirely true; Lost Coast is a good argument for this. AA with HDR IMO is more dependent on the game. With most games that support HDR, the performance would be too low to use AA in conjunction with HDR (with the exception of HL2).
However, I see what youre saying, and you do have a point: current Nvidia hardware cannot do HDR+AA through the drivers. The X1900XTX is a fantastic card. If I was buying a high end system it would be a difficult decision over which to spend my money on: X1900XTX or 7800GTX 512. Personally, I would go with the 7800GTX because ATI drivers are terrible. New Catalyst drivers aren't released as often as they should, and the ones that are released have many bugs in them. Currently, the only bug that Im aware of as far as ATI drivers are concerned is the Quake 4 issue. ATI X1000 cards cannot run Quake 4 in Ultra quality. While the game is loading, the game promptly crashes to desktop, thus forcing the user to play Quake 4 in HQ instead of UQ. Nvidia cards have no problems with Quake 4.
My impressions on SLI vs. Crossfire go like this:
If I were to use 2 videocards in my system, Crossfire wouldn't even register as a choice. Crossfire Master Cards hardly exist and even if I did found one, Id soon realize that Crossfire is immature. Crossfire is relatively new, so it has lots of kinks and bugs. SLI has been out for well over a year now and has pretty much been perfected. There are SLI profiles for hundreds of games, it has better refresh rate and multiple monitor support, its generally faster than crossfire, and above all- I don't have to go hunting in the Congo to find a Master card for it. I can just go to Circuit City and buy another card of the same specs, shove it in, and it will work.
I like that ATI is making new hardware, and I really like how ATI hard launched the X1900 like Nvidia had with the 7 series cards and the 6800GS. ATI just needs to get their buts in gear and release Crossfire Edition cards along with regular driver updates.