
Originally Posted by
Fizzler
How much RAM does your old video card have vs. your new?
Vista / XP or any other 32 bit OS can only address 4 gigs of TOTAL memory when it boots into the OS it will first addresses I/O devices with their own on board memory like video cards. That uses up some of the address space then when Windows boots it will address the rest of the 4 gigs.
The only 32 bit OS that can see all 4 gigs is 2003 server edition because it supports 36-bit PAE extensions.
XP and all versions of Vista in 32bit can only address 4 gigs TOTAL which includs the video card and all other I/O devices.
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