I'm sure this has come up before, but I have bad luck with vBulletin search. I'm going to purchase a new iMac sometime soon, and I'm clueless between the gaming potential of the i3 and i5 on the 21". I'll have Cataclysm when it launces at midnight without a doubt, and I'm currently playing a lot of SC2.... so my question is, does spending an extra $180 on the i5 make a difference? If it does, I minds well upgrade as I plan on using this for a couple years. Any insight is greatly appreciated, thanks!