The Alphacool ES Copper/Carbon water cooler with backplate was developed for the Alphacool Enterprise Series. Due to the positioning of the connections, the hosing of the cooler in the server rack is significantly simplified. The top and the Backplate of the cooler is made of carbon. This makes the water cooler lighter compared to Alphacool's Eisblocks with acetal or acrylic tops. This cooler is 1U compatible! Copper or aluminum? Alphacool uses only copper for all water-bearing parts. Copper has almost twice the thermal conductivity of aluminum and is therefore clearly the better choice of material for water cooling. The chrome-plated copper base is highly resistant to acid, which means that chipping of the chrome plating can be ruled out. Compatibility: - Inno3D GeForce RTX 4080 iCHILL X3, 16GB GDDR6X (C40803-166XX-187049H) - Inno3D GeForce RTX 4080 X3 OC, 16GB GDDR6X - Inno3D GeForce RTX 4080 X3, 16GB GDDR6X - PNY GeForce RTX 4080 16GB Verto Triple Fan, 16GB GDDR6X (VCG408016TFXPB1) - PNY GeForce RTX 4080 16GB XLR8 Gaming Verto Epic-X RGB Overclocked Triple Fan, 16GB GDDR6X (VCG408016TFXXPB1-O) - PNY GeForce RTX 4080 16GB XLR8 Gaming Verto Epic-X RGB Triple Fan, 16GB GDDR6X (VCG408016TFXXPB1) - Inno3D GeForce RTX 4080 SUPER iCHILL Black, 16GB GDDR6X (C408SB-166XX-18700006) - Inno3D GeForce RTX 4080 SUPER iCHILL Frostbite, 16GB GDDR6X (C408S-166XX-1870FB) - Inno3D GeForce RTX 4080 SUPER iCHILL X3, 16GB GDDR6X (C408S3-166XX-187049H) - Inno3D GeForce RTX 4080 SUPER X3 OC, 16GB GDDR6X (N408S3-166XX-187049N) Technical data cooler Dimensions (L x W x H): 218,44 x 120,10 x 19,17mm Backplate height: 1mm Weight (total): 1025g Material cooler: Chome-plated copper Material cooler top: carbon Threads: 2 x G1/4"