Mac Pro 3.7GHZ 4-Core Xeon E5-1620v2 Processor (D300 Video Late 2013). - Apple ME253LL/A-D300. The Mac Pro Quad Core 3.7 (Late 2013) is powered by a single 3.7 GHz Quad Core 22-nm Xeon E5-1620v2 processor with a dedicated 256k of level 2 cache for each core and 10 MB of level 3 Smart Cache. Custom configure your Memory and Hard Drive and dual AMD FirePro D300 graphics processors with 2 GB of GDDR5 memory each.