Full Details on Amazon.com : http://www.amazon.com/gp/product/B005HIWD32?tag=tsukuyomi-20
Komputerbay 16GB (4x 4GB) DDR2 PC2-5300F 667MHz CL5 ECC Fully Buffered FB-DIMM (240 PIN) 16
ECC Fully Buffered an FBDIMM will not fit into a standard DDR2 socket and a DDR2 module will not fit into an FBDIMM socket
Capacity 16GB
Speed PC2-5300F 667MHz
240-Pin DIMM
Lifetime Warranty