16GB KIT (4 x 4GB) Dell PowerEdge Series 2970 6950 (ECC Registered) M605 M805 M905 R300 R805 R905 SC1435 T300 T605 DIMM DDR2 ECC Registered PC2-5300 667MHz Dual Rank RAM Memory Genuine A-Tech Brand 16GB KIT (4 x 4GB) DIMM DDR2 ECC Registered PC2-5300 667MHz Dual Rank RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell PowerEdge Series. (See Compatibility List Below)