4GB DDR2 800MHz PC2-6400 240Pin 512X72 Fully Buffered Memory for Mac Pro System 2008.
This memory is compatible with 2008 Quad Core 2.8GHz and 8-Core 2.8GHz/3.0GHz/3.2GHz Mac Pro System.
About 2008 Quad Core 2.8GHz and 8-Core 2.8GHz/3.0GHz/3.2GHz Mac Pro System:
Total Number of slots: 8
Maximum Memory: 32GB
Maximum Memory/Slot : 4GB
*Must Upgrade using Matched Pairs
Supports DDR2 240 Pin Fully-Buffered DIMM memory sticks
Four or More FB-DIMMs installed provides for best performance
One of the major brands like Crucial, Micron, Samsung, Kingston, Corsair, etc.
Note: Depending on availability, the shipped item's condition could be New, Used, Refurbished, Pulled or OEM.