All copper 1U radiator 1151 1150 1155 1156 CPU fan turbo fan? 4-wire high-speed version: the maximum speed is 5300 ± 10% rpm, and the air volume is large. It supports 4-wire PWM speed regulation (provided that the BIOS of the main board supports and turns on the speed regulation function, otherwise the fan will run at full speed, with large noise). It is recommended to use the CPU with power consumption less than 100W; if the air volume is large and the noise is large, please purchase carefully. 4-pin Silicone grease with heat dissipation