If anyone can help me, it's you guys. I have an older Mac Pro. Here's the specs: Model ID: Mac Pro 1,1; Processor: 2x2.66 GHz Dual-Core Intel Xenon; Memory: 32 GB 667 MHz DDR2 FB-DIMM; Serial: G874927X0GP; Bus Speed 1.33 GHz; and the OS is: Mac OS X Lion 10.7.5 (11G63). Did I leave anything out? As you can see, I have a lot invested in this box (along with a nice, but older, 23" Cinema display, all the drive bays full, and a ton of peripheral devices). I am a very busy freelance graphic designer, and I use the Adobe CS6 Suite for 90% of my work. Am I truly stalled out at OS 10.7.5? Is there any way I can upgrade this config any more? I must say, I am proud of myself for always buying the most upgradable Mac and then keeping it current for as long as I can. Any advice from the genius squad? ;-)