8GB KIT 2 x 4GB Dell Optiplex Series 3010 390 580 790 7900 9010 980 DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine A-Tech Brand 8GB KIT (2 x 4GB) DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Optiplex Series. (See Compatibility List Below)