Features: brand new and high quality Function: Solve the 3090 graphics card back memory high temperature problem. Integrated back plate radiator: no need to patch together, easy to install. Adjustable speed fan: Standard 5010 dual fans, up to 20CFM at full load, low noise hydraulic bearings, PWM speed control possible, both dynamic and static. Features: The fan cable is a 4-pin interface, which is the same as a normal chassis fan and is connected to a fan socket such as a SYS fan on the motherboard. It can be started in the motherboard BIOS to adjust the speed, the speed range is 1500 ~ 5000rpm, which can be arbitrarily adjusted. About the choice of thermal pad: The back plate of the graphics card is flat: 0.5mm thick thermal pad is recommended. Graphics card backplate is uneven: 1mm thermal pad is recommended. Specifications: Item name: GPU rear radiator Model Number: GK6 Color: Black Optional heating pad: 1mm pad 500 / 0.5mm pad 600 / 1mm pad 600 / 0.5mm pad 700 / 1mm pad 700 Body Material: Aluminum Alloy Body size: approx. 90 x 180 x 15mm/3.54 x 7.09 x 0.59in Fan model: 5010 bracket Fan speed: 1500-5000 ± 5% Fan interface: 4 small pins, adjustable PWM speed Fan air volume: 10.3CFM ± 5% (individual) Fan pressure: 25mm / H20 ± 5% (individual) Bearing type: sleeve bearing Cable length: 400mm ± 10mm Application: graphics card Bearing: oil bearing Fan life: 40000 hours Noise: 27.5dBa Lines: 1 line Type: heat sink Power interface: 4 pins Fan: 2pcs 50cm Application: For RTX 3090 3080 3070 series graphics card Package Includes: 1 x Radiator 1 x Heating Pad (1mm pad 500) 10 x Connection Cables 10 x High temperature Resistant Rubber Band 2 x Gloves 6 x Cleaning Paper note: -Please allow 1-3cm in size error for manual measurement. -Color deviation may differ due to different monitor settings, please understand.