This is partially related to Poor Performance With 4GB Memory
I had been using the last beta BIOS (1021.006) for my P4P800, so I decided to try the last non-beta (1019). With 1019, 3584MB of memory is detected, up from 3327MB on 1021.006. There's a major problem usability problem with 1019 however. The screen will go black from time to time when in games while sounds can still be heard. When the game is actually seen, it seems to be running at normal performance (unlike the problem I had in Poor Performance With 4GB Memory
). So... any help would be greatly appreciated.