Finally, they sent email about selling Mac Pro 2010 for just $77.50 Lower than I expected. Specs are same except that CPUs are 2.66 6 cores(12 cores total) instead of 2.44 I guess I don't need to upgrade CPU for my uses. Im still searching for other parts such as GPU, PCIE USB 3.0, and PCIE SSD. Gonna get RAM from OWC. https://www.amazon.com/Kingston-Hyp...=1475013065&sr=1-5&keywords=pcie+m.2+ssd&th=1 https://www.amazon.com/Ports-Inatec...id=1475011314&sr=8-3&keywords=mac+pro+usb+3.0 Not sure about GPU due to voltage and performance. I want GTX 1000 series but they are not supported yet so Im thinking to get 900 series like 970. Any thoughts?