Windows 7 64 bit or Windows 7 32 bit??

I have a 4GB of RAM in my PC and a powerful Galaxy 9800GT 1GB Video Card..........should i go for Windows 7 64 Bit OS.........My main worry is that i have to buy all my games and softwares again for 64 Bit OS which Would prove to be much costlier on the other hand i m a regular user of Auto CAD 2008-2010 and games like GTA 4 Assasins Creed 2 Prototype........plz plz help me out????should i go go 64 bit OS or not?????????|||I would go with 64bits. With 32-bit Windows, you're stuck at 4GB of RAM which is the limit for the OS, and even then, you're only using about 3.3GB of it, give or take. With 64-bit, 4GB of RAM is the new minimum standard, and with 4GB, you can run tons of applications with zero slowdown. Windows 7 (and Vista for that matter) runs so beautifully with 4GB of RAM you'll wonder how you ever did with less. II wouldn't hesitate, as long as you have 4gb or more, you should be good to go.|||For most would-be Windows 7 users, a 64-bit version of Windows 7 is the right move. But if you don't have sufficient RAM (at least 4GB), or you rely on devices that don't have supporting 64-bit drivers, or you need to upgrade an existing 32-bit installation, 32-bit Windows 7 might be the better choice. A few editions of 64-bit Windows 7 provide a Windows XP Mode that solves some backward-compatibility problems, but it isn't a universal panacea. In speedy Q&A format, here's just what you need to know.|||if you have a quad core you have to go with a 64 bit operating system other wise the 32 bit will be unable to run with the processor. Most programs have a 64 bit today because most computers have quad cores.|||You can run 32-bit software on a 64-bit OS, so there shouldn't be an issue.|||stay with 32 bit until 2011|||yeah why not