Posted 05 March 2011 - 11:00 PM
The main difference between 32-bit and 64-bit is the amount of memory you can use, there are other security-related differences, but the memory is the main one. With 32-bit you are limited to 4GB of RAM minus 500MB to 1GB due to addressing, leaving you with 3GB to 3.5GB of usable memory. With Windows 7 Home Premium, you have a maximum of 16GB of RAM you can use with 64-bit, other, higher end versions of Windows 7 allow for 192GB of RAM. To use a 64-bit operating system, you need to have a 64-bit capable CPU, which you do. If you plan on using 4GB or more of RAM later, you may as well go ahead and install the 64-bit version since going from 32-bit to 64-bit requires a complete reinstall of Windows. If you're going to keep your current RAM ammount of 2GB until you decide to replace the PC, you should go 32-bit since there may be a slight performance hit using 64-bit on a system without 4GB or more of RAM due to items in memory taking up more space in a 64-bit operating system. There are a few games that use the increased RAM and faster instruction sets a 64-bit operating allows for. Most games have an option to run in 64-bit if they can. S.T.A.L.K.E.R., Crysis, Lost Planet, some Valve games, and Farcry are some games I know of that run 64-bit. The good thing about 64-bit gaming is if the game is native 64-bit, and you have enough memory, the game will load as much of itself as it can into memory. Currently, you would see more benefit if you run many Windows, or internet tabs, open all at once, run number-crunching software, databases, video rendering, or 3D content creation.