Full Details from Amazon.com : http://www.amazon.com/gp/product/B005ZV1CYC?tag=onigi-20
8GB 2X4GB Memory RAM for Dell PowerEdge R805 R300 T605 M805 M905 240pin PC2-5300 667MHz DDR2
Brand new certified 240pin PC2-5300 667MHz DDR2 ECC Registered RDIMM Black Diamond Memory
Low density 8GB 2X4GB memory kit 2 sticks of memory module
100 compatible garrantee for Dell PowerEdge R805
100 pre-tested on Dell system to ensure functionality
Lifetime warranty