8GB Total memory using 1pc of 8GB 1600MHz Module 240pin dimm DDR3 12800. 
Lifetime warranty for exchange. 
We don't use Generic modules to avoid incompatibility issues. 
Guaranteed to work or you get all of your money back including shipping.
Features
Compatible with 
Dell Optiplex 790 USFF
Max memory 16gb
sockets 2

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