Hi all tomorrow I take delivery of my new old mac pro 5,1 mid 2010 dual quad CPU 8 cores. Love the idea of the upgrade possibilities! I have checked all the previous post and still can't make a choice! My question is do I go 2 x x5677 and stay with 8 beefy cores or do I go for the x5680 (about the same price) Will I be using the extra cores? What I do: I work in mobility so not designing anything, I run a about 2-3 VMFusion systems at anytime, I edit some photos (entry level stuff) I convert some videos nothing major and I play games from time to time. Besides that I come from a support background so know the internals and love MAC. I am still pondering the GPU but there is enough info on here to get me there. Ill be going PCIe but mostly just because I can. SO will the 8 x 3.49 core do me or should I go 12x3.30 Mac comes with 32gb of Ram 1GB GPU original.