Apple Mac Pro 4,1 (2009) Model A1289 8-core 2.66GHz Xeon Dual CPU W/12 GB RAM

2009 Mac Pro | CPU Tray | 3.46GHz 8-Cores | Model ID 4,1 to 5,1 | NO RAM

2009 Mac Pro | CPU Tray | 12-Cores 3.46GHz | Model ID 4,1 5,1 | NO RAM

12 Core Apple Mac Pro 5,1 2010 2012 Pair X5690 3.46GHz XEON CPU upgrade kit 5.1

Apple Mac Pro 5,1 Single Tray 3.46 GHz Intel Xeon x5690 CPU 6 Core w/16 GB RAM

Matched Pair 12 Core 3.46GHz XEON X5690 CPU Processor 2010 2012 Mac Pro 5,1

2009 Mac Pro Upgrade Tray 3.46 12 Core 128 GB 1333 Ram

2010-2012  Mac Pro 5,1 CPU Tray with 6-Core Westmere 3.46GHz Xeon and 48GB RAM