Full Details on Amazon.com : http://www.amazon.com/gp/product/B005ZV1JCM?tag=tsukuyomi-20
4GB 2X2GB Memory RAM for Dell Precision Workstation 690 (750W Chassis) 690 (1KW Chassis) 690n
Brand new certified 240pin PC2-5300 667MHz DDR2 Fully Buffered FBDIMM Black Diamond Memory
Low density 4GB 2X2GB memory kit 2 sticks of memory module
100 compatible garrantee for Dell Precision Workstation 690 750W Chassis
100 pre-tested on Dell system to ensure functionality
Lifetime warranty