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I'm installing Windows on an old(ish) machine again - and am again faced with the question of whether to install the 32-bit or 64-bit version.
Instead of asking this question specifically for some individual setup (like here), let me ask more generally:
What is a good rule of thumb, or combination of criteria or rules, for deciding between 32-bit and 64-bit?
Possible factors affecting the decision:
- Which version of Windows is to be installed (Win XP, Win 7, Win 8.1, Win 10); I'd guess the newer the version, the better it is to go 64-bit.
- Memory size (1, 2, 4, 8, more) - 32-bit prevents you from benefiting from > 3GB memory or so; and 64-bit must eat up more memory.
- CPU speed - is this at all a factor?
- Others, I'm sure...
Windows x64 doesn’t use “a lot more memory”. It does use much more space on disk, though. – Daniel B – 2015-07-14T21:05:15.033
install a 64Bit Windows if you have 4GB or more installed memory. – magicandre1981 – 2015-07-15T04:10:27.343
@DanielB: I would think that whatever structures use native ints take up more memory, and that blows up memory use somewhat. – einpoklum – 2015-07-15T06:13:23.187