ASRock Motherboards X79 Extreme6/GB compatible Black Diamond memory 8GB 2X4GB DDR3 ECC UDIMM 1066MHz. Compatible computer model: ASRock Motherboards X79 Extreme4-M, X79 Extreme3, X58 Deluxe3, 970 Extreme3 R2.0, X58 Extreme6, X79 Extreme6/GB, X79 Extreme11, G41M-PS, 970 Extreme3, X79 Extreme4, 970 Pro3 R2.0, G41MH-LE3, Fatal1ty X79 Professional, X58 Extreme3, Fatal1ty 990FX Professional, X79 Extreme9, Fatal1ty X79 Champion, 970DE3/U3S3, X58 Extreme, G41MH/USB3 R2.0, 970 Extreme4, G41MH/USB3, 970 Pro3, X79 Extreme6, 990FX Extreme4, X58 Deluxe, X79 Extreme7. Black Diamond Memory offers the most extensive line of memory solutions today. With our decades of experience specializing in memory, Black Diamond Memory is a proven manufacturer to the semiconductor industry. Our great products combined with our world class service and support have helped us to where we are today. When you have an Black Diamond memory chip, you can count on it being the best available memory for your system. Our system specific Branded Memory line delivers in performance, and is designed to be guaranteed in compatibility with your system. Each of our memory chips come with a lifetime warranty for your peace of mind. Use our Upgrade Configurator to easily find the correct memory module for your system. Please keep in mind that this memory will ONLY work on the models listed above. 15% Restocking fee will apply for non-defective items.