My ASUS m/b [running XP SP3] was installed with 1x256MB PC2100 DIMM. I recently bought 2x512MB PC3200 DIMM & tried to add them. I encountered the following problems:
1. It is not possible to mix the PC2100 with the PC3200. The PC hangs & comes up with 'fatal error' blue screen.
2. It runs fine with 1xPC3200 card but as soon as I add the 2nd PC3200 card, it hangs & comes up with 'fatal error' blue screen.