Water Cooling Block GPU PC Copper Liquid Cooler Water Block AMD W40 Description: Water Cooling GPU PC High Performance Copper Liquid Cooler AMD W40 2 holes on the side of the lid, water flows off the side Copper columns 0,4 mm on copper base The water contact surface becomes large, so the block can quickly transfer more heat from the GPU The base is made of cut T2 copper (purity 99,9%) The surface flatness is less than 0,01 mm The base can better fit do GPU, so it can absorb more heat Copper base is processed in antioxidant technology Specification: Copper base dimension: 50*50*3 mm Fitting Thread: G1/4" Supported Pipe: PU Pipe mm ( ID )* mm (OD) or Solid Pipe mm ( ID )* mm (OD) or Silicone Pipe mm ( ID )* mm (OD) Material: Base: copper Cover: Clear Acrylic Fastening: brass, nickel coating Compatibility: Compatible with GPU with fan hole spacing 53 mm - 61 mm. The list of support is as follows: Nvidia Card: 6800GT, 6600GT, 7800GT, 7800GTX, 7900GT, 7950GT, 7900GTO, 7900GTX, 8600GTS, 9600GT, 9500GT, 8800GT (G92), 8800GTS (G92), 9800GT, 9800GTX, 9800GTX2, GTX250, G604 250, GTX250 , GTX275, GTX285, GTX570, GTX580, GTX660, GTX660TI, GTX670, GTX680, GTX560, GTX460, GTX460TI, GTX560TI. AMD Card: X1900PRO, X1900XT, X1900XTX, X1950PRO, X1950, X1950, X1950, X1950, HD6950, HD6870, HD6850, HD6790, HD7870, HD7850, HD7950, HD7970. Package includes: 1x Water cooling block 2x Barb connectors 4x mounting screws