Originally posted by: JPB
If the CPU isn't a good choice to start with, what do you all recommend ?
Cut the second 3870 and forget SLI. Now add more to the first one making it a MSI 8800GT OC edition (pick one, I took MSI even though I didn't like the warranty it was tough to beat the price and 10% performance boost because OC out of the box). IT's barely under a GTS version for $184 after rebate at newegg. Next year buy whatever is $150 or so and have a spare card laying around. By next year for $150 you'll beat 2x3870. One 8800GT should play almost everything at 1680x1080. I'm running mine on a 24in Dell in 1920x1200. There aren't many I can't play at that res (crysis comes to mind).
Now you don't need an SLI motherboard and you can dump the PC Power and Cooling PSU. Your current one should work fine. Because of the $120 savings on 2nd card, and $150 on PSU you can build it now

Get an Arctic Freezer pro 7 for $26 (newegg) and an E3110 for $229 at excaliberpc.com. Overclock to 3.6ghz and laugh about it. Bump it up some more the following year when you upgrade the vidcard.
Don't get me wrong PCP&P is the best. PERIOD. My family owns 2, I had one also but accidentally left it in Oregon when I moved...ROFL. But with 26amps (12v)I think you can get by at least until you prove it won't fly with the current psu. You can change PSU's later at any time when your budget allows. But you get to enjoy the PC NOW instead of 2-3 months away.
If you MUST by a part now, buy whatever you can actually use in your current system. If it's PCIE then get a vid card. Maybe just one of the two. Buy the second when you get the rest of the system. IF you have a DDR2 AM2 board you could also get the memory now and use it, replacing whatever amount you have now. You might find a new vid and 4GB memory allows you to wait for a few months for 45nm to come out in mass quantities.
E6750 is $200 boxed, I say get an E3110 for $229. You get SSE4.1, an extra 333mhz per core, lower power, easy OC to 3.6 without exotic cooling (just a freezer pro 7, hell even it's little brother Alpine 7 for $14 is better than retail hsf). Just some stuff to ponder.