I am in no way computer illiterate but I have a few questions. I am about to purchase a 27 inch iMac and I wanted to know how drastic the difference between the i5 and the 3.06 are. I look at 2.66ghz and feel like I am getting less (I know I'm not). I could survive fine with my needs on the 3.06 but I am all about the latest and greatest and have no problem paying the extra $300 IF the difference is VERY noticable. I know I won't be doing heavy video editing so, is that the main place the difference would be noticable? I read these threads and honestly I am so stuck between what to purchase. I know what would be suitable for my needs; the 3.06. But I just --- DON'T KNOW. Please Help. Also- Aftermarket RAM does NOT void the warrenty, correct?