Had him before. On a 7950 Boost and now on a R9 280x Installation is fairly simple, the instructions supplied is rather difficult to understand garbage there. If you come once behind it is not difficult. The cooling capacity of the Accelero is really great. Cools my graphics card in all walks of life and letting it come never more than 65 degrees. Here, the Accelero is always extremely quiet. In Idle inaudible minimum perceptible under full load. But have to hear it in the room really quiet as a mouse to be quiet. In normal operation, so inaudible. My computer is in the living room and is trimmed to Silent, and I am completely satisfied with the Accelero Xtreme 4. Peace at last, even with graphically elaborate games. In addition, I can only praise the customer of Arctic! For my fans I had lost the mounting plate. There was nowhere to buy this, I turned via email directly to ARCTIC. The next day I had an answer in the mailbox! Mounting plate is replaced by Arctic FREE! That's what I call customer service! As other manufacturers could learn a lot! So top product! Buy and enjoy the silence :-)