I've decided on the iMac to get for college. I will be ordering it in a few weeks, but I did have a concern. Right now, I don't want to spend the extra money to upgrade the iMac's ram. Right now, I'm using a 1.25ghz G4 with 1GB ram...would a 2ghz G5 with only 512mb ram seem just as fast? I will be upgrading the iMac's ram at x-mas, but should 512 be fine until then? I'm hoping that the faster processor with a WAY better video card should supplement the difference nicely. Anyone know for sure though?