Great cooler for the price! I have an i5 6600k overclocked to 4.5ghz and at idle I get temps of 26 degrees and under load the temps don't often go over 60! Im not sure if it is just mine but the fan makes loud knocking sounds when the system turns on and when spinning at high RPMs. The pump is noisy at full speed so I would recommend turning it down. Overall this is a good cooler and I would recommend it to anyone with a low budget but still wants a water cooler!