Ordered: 2.8 GHz Duo Core Extreme (refurb), Received: 2.8 GHz Core 2 Duo (24" iMac) The research I have done tells me the extreme chip is newer technology, but that it could also be an overclocked 2.6 chip (or not, as well). Is there going to be any noticeable difference between the two chips when running processor intensive apps? Which chip will be better for resale in 2 years? I'm going to be running the entire Adobe Creative Suite on this thing, spending the majority of my time in Photoshop. Also, looks like they gave me the 750gig HD instead of the 500 (pleasant surprise). I'm just wondering if I should let it go and be happy with what I have.