Posted 22 February 2008 - 10:05 AM
You'll have to see if there are 64 bit drivers for all the hardware that you plan on using in the system. This will include the motherboard/chipset drivers in particular. But you'll also need audio, video, network, modem, etc - not to mention drivers for any thing like a printer, scanner, camera, etc that you plug into the USB ports.
From what I've seen, support for hardware in 64 bit OS's is spotty at best. Vista seems to have a bit more support, but I still don't have a 64 bit driver for my TV card (so I can't use it).
The most common reason for upgrading to a 64 bit OS is more available memory - and thecutoff for 32 bit OS's is at 4 gB. So I would think that you'd be happy enough with 32 bit XP and wouldn't need to upgrade to 64 bit. FWIW - upgrading a system with 4 gB of RAM from a 32 bit to a 64 bit OS doesn't show any performance increase (IMO) - so it'll take 8 gB of RAM to see a significant difference.,
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