I originally purchased a mid-2007 20" 2.4ghz iMac, and just last week "traded it in" for a brand-new 24" 2.8ghz iMac. Long story there... I had upgraded the memory from 1gb to 4gb, and on the new one (which came with 2gb) up to 4gb. So I was hoping I was comparing apples to apples... so to speak. The question is does it seem like the new 2.8ghz ought to be faster than the 2.4ghz? I realize I could get flamed for asking a silly question like that, especially when I've used Macintosh since the Mac Plus, but I was really expecting a significant upgrade in speeds.