I have sucessfully gotten Vista going on my Opty 146 rig. I am typing from it now. Overall it works well. Need a lot of RAM though. I can't get it to see my RAID 0 Array however and that annoys me. It is a DFI Infinity nf4 SLI mobo and I can't find the driver for RAID. Probably am just not looking hard enough, but any help will be appreciated (and rewarded). Also, if you have Vista yourself, please post your opinion as well. I am interested in seeing what everyone's feeling towards this OS are. I think it "feels" great. The overall performance is good and it runs smoothly. Also, folding is no problem either. Everything, so far, has worked. Things like AIM, folding, IE, etc, all work well.