Thats probably not the problem? I don't see how 2d images could take up that much ram ever.
Unless you have a particle engine that spews pictures of famous actors I doubt your going to run out of ram just from images. If your getting an out of memory warning or something you probably have an infinte loop that loads something maybe. Ive had that before.
Considering the fact that the poster still has not posted his computer's specs, this can still be true. On my brother's desktop (extremely old and slow, outdated), I had a 800x600x32 screen drawing 1,850 16x16 tiles (static, non-moving), and it capped his RAM to 100% and ran less than 1 FPS. On my PC, I can get about 70 FPS sometimes higher depending on what I have running.