Low Power dual video motherboard

I'd like to build a medium-high performance desktop that at least idles at low power. I don't need a lot of 3D power but do need to support two 1920x1200 displays as well as doing some video and photoshop work, as well as compiling and other software development stuff.

It looks to me like an AMD dual core / 45 watt processor with AM2 socket, and a board like the GIGABYTE GA-MA78GM-S2H which has DVI and HDMI support (though only one at a time - can use an analog D-SUB for dual, not quite what I want but maybe OK for the power tradeoff) is about the best bang for the buck. Intel doesn't yet have any 45 watt dual cores, the comparable 65 watt dual cores are a bit more more expensive.

I'm pretty flexible, though, about what I build. I'd prefer an Intel if I can get performance and efficiency at a reasonable price (no socket P, and mobile processor, thus). I also like cool and quiet

Figure I'll either go with a small Seasonic or look for one of the smaller 80 plus power supplies, recommendations on something bulletproof there welcome, too.

Thanks much - BH