Gears of War PC

I bought Gears of War on PC and I exceed all the system requirments except for the 1G of RAM (It needs 1G of RAM to play and I have 1G). But quite often the game closes and I get a message saying "Gears of war has encountered a error and has to close. Sorry for the inconvenience." I was wondering if anyone knew why this is happening, I was thinking that i'm overclocking my computer and it closes GoW to prevent damage or something like that.
Any help would be nice, thanks.

[BKFraiders7]

My guess wouldnt be the RAM (mainly that is) but more to do with your graphics card being close to just meeting.