Apple ME253LL/A Mac Pro Desktop Computer (Refurbished) This Certified Refurbished product has been tested and certified to work and look like new, with minimal to no signs of wear, by a specialized third-party seller approved by Amazon. The product is backed by a minimum 90-day warranty, and may arrive in a generic brown or white box. Accessories may be generic and not directly from the manufacturer. 3.7 GHz Quad-Core Intel Xeon E5 Processor 12 GB 1866 MHz DDR3 ECC Memory 256GB PCIe-based Flash Storage, Mac OS X Yosemite Dual AMD FirePro D300 with 2GB GDDR5 VRAM each