Memory, 8 GB ( 2 x 4 GB ), FB-DIMM 240-pin, DDR II, 800 MHz / PC2-6400, fully buffered, ECC, Apple's MB092G/A
Memory, 512 MB, DDR, 400 MHz / PC3200, ECC
Memory, 1 GB, DIMM 184-pin low profile, DDR, 333 MHz / PC2700, 2.5 V, registered