I need a fairly decent CPU cooler for the Intel 4690K and I will use it with a slight overclock. Cooler needs to be under 150mm tall to fit in my Corsair SPEC 01 case, and it has to fit next to my Corsair Vengeance Pro Series RAM. It is in an MSI Z97-G45 Gaming Intel motherboard (if it makes any difference to the type of cooler). I would be fine getting an AIO watercooler (similar price to a H55/H60) but the case only supports a 120mm radiator. I am looking to spend around £50. I would prefer an air cooler to a water cooler.