Using the Vantec stealth 520 PSU with 2 X 512 pc3200 Kingston HyperX ram.
I only got this combo to work by reducing the dram freq in bios to 266mhz. However it should run at 400.
I ordered a pair of KVR400X64C25/512 which is listed as compatable on Asus' site and will try them. If the system won't run it at 400mhz I might have to go outside and exact my human superiority on some ants with a magnifying glass . . . hmmm should grown men be doing such things?
Will keep you posted
EDIT: Looks like it was memory. Have the above ram installed and it purs like a kitten, but runs like a cheetah
Will RMA the HyperX ram, very surprised that I got a bad stick or two, they failed all over the place on a memory test, will try them again when i get a new set it and keep you posted.