Windows 7 apps for 64 bit systems questions


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Thank you guys. I hate to ask so many questions, but you never know until you ask, :p

Geez I am loving this quad core.

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Running x86 apps on your x64 Windows will not affect performance btw since your processor can handle both x86 and x64 instructions.

(the older generation of 'true' x64 like the Intel Itanium only accepts pure x64 instructions and that's why kinda nothing runs on it :p )

It's perfectly normal most of your apps are still x86 though.

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Running x86 apps on your x64 Windows will not affect performance btw since your processor can handle both x86 and x64 instructions.

(the older generation of 'true' x64 like the Intel Itanium only accepts pure x64 instructions and that's why kinda nothing runs on it :p )

It's perfectly normal most of your apps are still x86 though.

Itanium didn't use the x64 instruction set, it used IA64. x64 is a "superset" of x86, thats why x86 apps runs fine on x64 procs. But IA64 was not so, requiring software emulation to run x86 apps. So software either must be rewritten or run with the huge emulation overhead.

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Running x86 apps on your x64 Windows will not affect performance btw since your processor can handle both x86 and x64 instructions.

Running x86 software on 64-bit Windows does affect performance and resource use as already explained in this thread, just not enough to really worry about. Most people don't care about a few percent, so it becomes mostly academic and not a reason not to switch to 64-bit Windows.

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