My 2012 27 i5 3.2 675MX 1GB feels slower than my late 2009 i7 2.8 Radeon 4850 512MB...WHY?! Like much slower...in applications such as Photoshop, general OSX feel, Cinebench GPU render looked and clocked slower, even restarts take longer. Did I thought getting an iMac 4 years newer would feel like an upgrade...honestly, even the screen isn't much of a noticeable improvement besides less glare... Thoughts? Anybody else come from the same machine (late 2009 2.8)?