I know this is a very old thread but its one of the few threads I can find when doing a Google search. I have the opportunity to put together a system using an XW6600 motherboard (the one with the angled DIMM slots) but I'm having a difficult time figuring out if the placement of the rear panel connectors (audio, USB etc) and the mounting screws are compatible with standard ATX or Extended ATX cases. I have a huge old Gateway 980 server with a useless Socket 603 board in it and I'd like to use this board in it to put together a dirt cheap Dual Quad Core Xeon server\gaming system.
Also, I have the 450W Delta PSU from the Gateway case as well as a Silverstone 650W unit that actually has an 8pin 12v power connector (similar to most server supplies)... does anyone know if these are likely to work for this board as well?
I've been researching this for over a week without any definite answers, and I'm not going to take the plunge on an $80 server board unless I can actually use it.
By the way, the only reason I'm doing this is because socket 771 Xeons are amazingly cheap. A 95 watt Socket 775 Q9300 2.5Ghz with 6Mb cache still sells for over $100, yet a low wattage 50 watt Xeon L5420 2.5Ghz with 12Mb of cache can be had easily for $19. Throw two of them into a system with a ton of ECC RAM (also incredibly cheap) and it'd be quite a beast for less than the cost of a new i5 quad core alone.