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Hi all, can someone recommend a good air fan/cooler for the i7-8700k? One that isn't too expensive, doesn't interfere with memory and isn't too difficult to install?

600W PSU coolermaster i7 4790k 4 8gb ram asus r7 250x 1 gb gpu asus h97m-e motherboard 1 ssd 120 gb 1 hd drive 500gb 3 fans 120mm monitor lg ips led 23mp65 i dont want to use my dektop for long time after power is down ,just to have time to safely turn it off. Thanks a lot for your answers