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you don't need more 4GB of RAM (lemmy.dbzer0.com)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 4 points 6 months ago (3 children)

This is only true if you're still using a 32 bit cpu, which almost nobody is. 64 bit cpus can use up to 16 million TB of RAM.

[–] [email protected] 20 points 6 months ago

Sorry I forgot to put my giant /s.

[–] [email protected] 5 points 6 months ago

With PAE, a 32 bit CPU can also use more, but each process is still limited to 4GiB

[–] [email protected] 4 points 6 months ago* (last edited 6 months ago)

This is only true if you’re still using a 32 bit cpu

Bank switching to "fake" the ability to access more address space was a big thing in the 80s...so it's technically possible to access addresses that are wider than the address bus by dividing it up into portions that it can see.