4870x2 best motherboard cpu and memory

Hello all,

I'm saving to invest in two 4870x2 cards for CF and would like to know which mid range motherboard, cpu and memory would be best suited/compatible for the card, without compromising too much of the cards full performance? Should I also just get a high end Mobo instead and invest later on a CPU and memory upgrade? Is a 850w PSU sufficent for both cards and other peripherals?

Right now I have

2900xt
e6600 running at 3 Ghz
Abit IP35 Pro
4Gbs of DDR2 PC5300 memory
Silverstone 560w
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More about 4870x2 motherboard memory
  1. well, grab an x38 board of some kind as x48s are really a waste, ehh, go ddr2 because ddr3 is too expensive for its gain, grab a new dual core intel 45nm cpu, it doesn't really mater which one because you can overclock them like crazy, get a good cooler, one suggested by the article recently done (try the noctua, its really easy to install, quiet and suits your needs, i have an e6850 at 4ghz on one with nice temps so i think the 45nm should do it fine) you'll need a good psu, but nothing over zealous as they are pretty much a waste, pc p&c 750w one should do (very nice psus) ehh... that pretty much covers it, hwoever, make sure you get a good psu rather than an over rated one.
  2. Each HD4870x2 card uses 250w at load. 2 of them would be 500w just for the 2 cards not counting your CPU, overclocking, HD, RAM, burner, fans or anything else. That would put you at about 700w+ system usage at load and that's being conservative. Well over 90% of a 750w rated capacity.
    http://www.atomicmpc.com.au/forums.asp?s=2&c=7&t=9354
    http://extreme.outervision.com/PSUEngine
    the PSU calculator doesn't have the HD4870x2 listed yet.
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