Question about RAM and if I should upgrade

Hey guys, just have a question about RAM and upgrading it. I bought my computer like 1-2 years ago.

Right now I have 2GB of DDR2 RAM, a 9800gtx, and a Q6600.

I'm playing Arma 2, and I can get all the settings to max (but turn down a few options since it doesnt make much of a difference), however, as soon as a bunch of stuff is going on it starts to slow down a bit.

Is this because of the video card or maybe the RAM or?

When I check my processes it shows 1.4GB of RAM is being used, what I'm wondering is if this is accurate of showing I don't need anymore RAM, or if things will start to slow down around 1.5 being used out of 2GB.

I have a feeling it's my card, which I don't want to upgrade for another 2 years if I can help it haha, but if RAM would make a difference I'd do it. But since it shows 1.4/2 it's hard to know if I need it or not.

Thanks guys

If you're running on Vista 4GB of RAM is recommended, if on XP you wont see much benefit from upgrading to more than 2GB illmatic87

If you would take the time to read the description of this forum it says "NO HARDWARE DISCUSSIONS". this belongs in the hardware forum and please next time post your topics in the correct forum.