I just purchased a 2007 iMac 20" 2.4 Ghz core2duo with the 2600 pro graphics for $200 bucks. (On a side note, seemed like a decent deal to me) I plan on upgrading it to 4 GB of ram and probably making a fusion drive for it. 1 TB internal drive and 120 ssd in the disc drive slot. That should all work and I will be running Yosemite on it. Do you think this can be a decent machine, it mostly be for just home use and some light Aperture use. I have always wanted an iMac but my pro is still my main machine.