16GB - 2x8GB Memory Ram Upgrade Apple Mac Pro 1.1 / 1.2 2006-2007 FB-DIMM RARE
If your not sure this is suitable for your Mac, yo u need to confirm your Mac is running DDR2, FB-DIMMS @ 667Mhz. Suitable for Mac Pros listed Below. Your mac has 8 slots and the maximum upgrade is 64GB (8x8GB).