Apple Mac Pro 3,1 8-Core 2.8GHz, 16GB RAM, 1TB HD, Mavericks 10.9 2x Intel Xeon 'Harpertown' Quad-Core 2.8Ghz Processors (8-Cores) 16GB (8x 2GB) DDR2 ECC Memory - 1TB 7,200-rpm Hard Drive ATI Radeon 2600XT 256MB Graphics Card w/ 2x DVI Output Bluetooth, Superdrive Pre-owned. 14-Day Return and 30-Day Warranty Period. Over 1000+ Mac Pro's Sold. Visit our site iBuildMacs.com or call (310) 844-6661 to speak to an agent.