24GB (4GBx6) DDR2 667MHz ECC Fully-Buffered DIMMs for the 2006 Mac Pro Models 1.1 and 2.1. Contains six (6) 4GB matched FB-DIMM memory modules that are specifically designed and SPD configured for the Mac Pro Model 1st Generation. These modules are compatible with the latest Apple Firmware.
Specifications:Watch our installation video:
orclick here for Apple's installation guide (PDF.)