XP64 was an odd animal. I had a Customer who usd it to run Unigraphics CAD. The Dell Precision machines they had with factory-loaded XP64 were fine. Trying to

XP64 was an odd animal. I had a Customer who usd it to run Unigraphics CAD. The Dell Precision machines they had with factory-loaded XP64 were fine. Trying to get their random other machines to run it w/ working audio, video, and chipset drivers was a pain. I never ran it as a desktop OS myself. I installed plenty of the server version it was based on (W2K3 x64) but those boxes always had standard VGA drivers, no audio, and sometimes a RAID controller driver, but that was usually it.