32bit running in 64bit OS
Community Forums/General Help/32bit running in 64bit OS
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About running 32bit applications: does it take more memory to run on a 64bit OS than on a 32bit OS? |
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I'm not an ADVANCED techie, but as an educated intermediate's guess I'd say... Why on earth would it? The amount of RAM a program uses is entirely dependent on the data it loads and creates, so theoretically the OS should have no effect on that. |
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About running 32bit applications: does it take more memory to run on a 64bit OS than on a 32bit OS? If you want to split hairs: Very marginally so, because it also needs to load a 32->64 bit thunking library, (WOW64), in order to run 32-bit executables. The extra overhead is insignificant though. The memory allocations made by the program itself don't change, IIRC. |
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I thought some 32bit programs were using more memory when running on a 64bit computer. My first thought was for each sector of memory (64bit), only half will be used for 32-bit sector. Meaning, the other half of the 64bit sector would be unused and left out, contributing to more slack and memory usage. I might be over-exaggerating it, but I do know 32-bit apps use more RAM than 64-bit apps. |