2gb or 4gb?

Hi.

U can go with 4GB that is the most common today, with that ur rig can handle multi task and ur games without problems.

yeah but if I get 4GB I'll have to get 64bit OS. I love firefox and it doesn't work well with Windows 7 64 bit. :S

Not necessary.. The 32 bit edition will detect as much as 3.5 GB out of the 4 GB.. So you'll be under no loss.. Besides, your desktop and application experiences will be lot smoother so it is worth the investment..

Yeah, for use all the 4GB u need a x64 OS, or keep ur current 32 bits OS and only use 3.5GB that is the max that a 32 bits OS can use.

For Firefox, isn't necessary go with Firefox x64. One of the big things of the x64 OS is that u can run x86 (32 bits) and x64 applications without problems, so, u can install Firefox 32 bits on the x64 OS and will run without problems.

Exactly. It works just fine like this. And its still better than 2.

Where did you hear this? I've been using FF with 64 bit for the last 5 years and it's been flawless.

No reason not to go 4, even on a 32bit OS.