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Old 02-23-10, 10:15 PM   #2
CaptainHaplo
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http://support.microsoft.com/kb/316739

Simply put your allocating 1G of space to the kernel, 2 G becoming available to the programs your running. However, by doing this, your taking memory away from OS "housekeeping" functions - paged and non-paged pools, etc. What this can do is push data out of where it needs to be, meaning stuff like parts of your vid card driver may not load as needed, games may have plenty of room, but the ability to USE that room may be compromised.

Realize you asked about XP - but in reality XP (unless its the hodgepodge 64bit) can only access a bit over 3 Gigs total. While the switch will work, you just moved some memory onto your hard drive if your using a 32 bit OS.

Try lowering those values to get better performance overall.
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