this post was submitted on 05 Jan 2026
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Windows XP 32bit can't hit 5gb memory ceiling, the 32bit memory addresses don't allow that
https://en.wikipedia.org/wiki/Physical_Address_Extension
Not at release. It came later though for certain chipsets.
Wasn't there a bug that made XP unable to hit even 4GB, I seem to recall a limit of 3,5GB ram....
Short answer, no, there were artificial limitations to ensure compatibility. Plenty of long-form answers if you care to search.
It was 3.2GB and afaik it wasn't a bug, but 800MB was reserved for hardware IO
PSA: In the video (not the retarded posted article that has 0 proofreading) it's stated that he used Windows XP 64 bit