X32 x86

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smart.boytm

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hello!

Difference between Windows 32-bit and 64-bit comments? Why 64-bit Windows is called X64 and 32-bit Windows is called X86
 
smart.boytm said:
hello!

Difference between Windows 32-bit and 64-bit comments? Why 64-bit Windows is called X64 and 32-bit Windows is called X86
Click to expand...

there are a few differences, but most notably and most importantly, and just about the only one that matters really to the average user, is that 64 bit can utilise a hell of alot more memory than 32 bit can. x86 OS can utuilise (in theory) up to 4GB, however in reality it is only ~3.12 - 3.5. x64 however can handle hundreds of GB (or maybe even a couple of TB I think the Win 7 table shows :confused:)
 
Aastii said:
there are a few differences, but most notably and most importantly, and just about the only one that matters really to the average user, is that 64 bit can utilise a hell of alot more memory than 32 bit can. x86 OS can utuilise (in theory) up to 4GB, however in reality it is only ~3.12 - 3.5. x64 however can handle hundreds of GB (or maybe even a couple of TB I think the Win 7 table shows :confused:)
Click to expand...

Without OS memory limitations put in by microsoft (how nice of them :rolleyes:) 64 bit operating systems can see 2 ^ 64 = 18446744073709551616 (Bytes) of RAM.

Put that large number in bytes and you get 16 petabytes i believe.
 
yea, a crazy amount of ram, but most applications in windows still run in 32 bit addressing space, and wont take more than 2G of ram, if they need it
 
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