Okay well im gunna be building a gaming rig that can play crysis mostly on all high settings i have about 700-900 to spend on it. Here is the question Should i use intel or amd I will no be overclocking anything what parts should i use?
http://www.bit-tech.net/hardware/buyers-guide/2009/06/02/what-hardware-should-i-buy/4 Might be a good place to start looking. It's a bit over the budget, but you can just drop the damn twelve hundred and maybe downgrade the CPU to better match your 700-900 (USD?) price bracket.
Both get the job done. S775 is already obsolete, i7 is still too expensive, and AM3 is... Well, pretty new. In that sense it might be a good idea to go for AMD, but then again, does anyone ever update just the processor? And seeing you aren't going to overclock, you might as well just toss a coin.
http://forums.bit-tech.net/showpost.php?p=2012080&postcount=9 Try that, but bump the processor up to the Phenom II X3 720.