Care to rephase the question? If you mean 32-bit vs 64-bit WIN7, then for 'future-proofing' you should choose 64-bit. If you already have 32-bit and are happy using 4GB of RAM or less, then stay with it because you won't see any difference in performance.
Care to rephase the question? If you mean 32-bit vs 64-bit WIN7, then for 'future-proofing' you should choose 64-bit. If you already have 32-bit and are happy using 4GB of RAM or less, then stay with it because you won't see any difference in performance.