Mobo u ppl suggested are for extreme gamer not for graphics except for MOBO sugested by gx_saurav
also i asked cgsociety people & u all see their reply at *forums.cgsociety.org/showthread.php?f=23&t=604322
There is a big misconception among users that a High End gaming machine means a high end workstation. This is not the case.
If you want to play games in a hardcore manner then go for motherboard with SLI support & add 2 graphics cards. However, this SLI support will not give u any benefit in Workstation apps over a single 8600GT.
Highn end workstation doesn't mean over clockable motherboard, SLI, etc. It requires stability. The last thing you would want is for your system to crash while rendering a 300 frame animation at 290 frame.
Intel DG31PR is something I like & I have. You cannot over clock in Intel. No motherboard whether it is from Asus or Abit is made for games, they are all sames. The "made for gamers" tag is nothing but a marketing ploy. You can very well use these gaming motherboards for workstation use.
In my view, with the budget you have...I would purchase this.
Core 2 Quad Q6600
Intel DG33FB Motherboard
2X1 GB DDR2 667 MHz RAM
nVidia GeForce 9600GT cos you also need to play games.