Originally Posted by Badhon_raj
Thank you guys for your replies. I actually didn't have enough knowledge about that. So I wondered if it is possible to utilise more than 4 gb ram in x86 os. There are some program compatibility issue (very little, but there is) with x64. So I thought it would be good if it was possible. Anyway now according to your replies I came to the conclusion that it would be much better to use a x64 os.
And another off topic subject, I read a lot of topics in this forum. And I learn a lot of things about computer hardwares and staffs here.
32 bit OS is capped at 4GB. the real problem is that applications are capped at 2GB maximum - which is where the problems come in with games.
with LAA patching (see fordGT90's links) on a 32 bit OS, you can kick that limit to 3GB - or 4GB on a 64 bit OS, thus preventing (or at least, hugely delaying) those crashes.