Considering that I'm going to be getting the 4850 gfx card, and an educational discount, I'm trying to decide if 100mhz speed increase between 2.93GHz and 3.06GHz is worth $290 (after taxes on either machine purchased with a 4850 gfx card and applecare, using a discount for my school). I really don't need a whole TB of storage, as the 640gb drive is plenty sufficient for my need. Would the 3.4% processor speed make a noticeable difference in the following situations?... Photoshop (I do graphics design stuff here and there) iPhone application development in XCODE WoW (I play when I have some time to kill and I don't feel like leaving my apt) Misc Games... I'm not a gamer (I own a Wii) and I don't play a LOT of graphics heavy games. However I do hate bad frame rates. As long as I can turn all of the settings down to minimum and get above 30 fps in games (WoW), I'll be happy. From everything I've looked at, it appears as though the two chips are from the same series, using the same bus speed, running the same speed memory. Is there anything else I'm not considering? Thanks in advance for any advice anyone can offer me!!