How much gb ram for window 7 to play gta iv episode from liberty city

I would recommend 4GB with Windows 7, whether you game or not.

Well it requires 2GB RAM... you can read system requirements from here:
http://en.wikipedia.org/wiki/Grand_Theft_Auto_IV#Window...

i would recomend more than 4gb personally, id say at least 6gb but you can go higher or lower if you want, dont go below 3 or your computer will slow to a crawl (in win7 x64)

This topic has been moved from the section Windows 7 to section Video Games by Area51reopened

4GB of the fastest memory your PC can support is always the best option, in my opinion. Anything over 4GB might be a waste, because very few people multi task that much.

Note that more RAM does not mean better gaming performance (for most games).

^+1

Regardless of the OS, I think the standard these days is pretty much 4 gig.