Ooops, I am back.
mongoosed - Tom's Hardware published on May 14 an article on R600 (alias ati 2900XT) where you can find plenty of benchmarks with various VGAs in SLi, Crossfire and and nonSLi/nonCrossfire modes. It might help you decide about the VGA config. Looki hera:
VGAs - ATI & nVidia
Guys, btw, to the point now - mobos for the mongoosed config with E6600 and possibly(!) one 8800GTX or not

. Here are three options I come with - feel free to criticise or add:
1. On nForce 680i - best reviews EVGA nForce 680i A1. For that see this thread on Anand:
Best 680i mb
2. On Intel 965P - new goody from
the DFI itself - DFI Infinity 965-S. This one was discussed and highly raised on one thread here at TG. The guys from this thread say this board is selling fast. For a discussion see this thread on XS:
DFI Infinity 965-S Tests (535 FSB 1:1)
3. On the brand new Intel P35 Bearlake - future Penryn supportive, fast and somewhere furious :twisted: - Gigabyte P35-DQ6 (or Gigabyte P35-DS4). I know these two did not get time for a decent review and testing to prove they are sufifciently stable, but do bear with me. I've metioned that DQ6 was already tested in comparison with 680i and 965p on this quicky ocworkbench site:
P35-DQ6 vs 680i and 965P
What do you think?
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The usual disclaimer - my advise, your decision: bad mama is your problem, not my fault