I am building an i5 2500K rig that I will then overclock to 4.5GHz. I don't really need to go higher than that for gaming. I have a spare Titan Fenrir and would like to here from others who are cooling an overclocked i5 2500K on air to know if the Titan will be sufficient and what kind of temps can I expect. I have a load of different fans that I can attach to the cooler. The case will likely to be a CoolerMaster HAF 922 but I am also considering my Fractal R2 with GT's in the front. Can anyone share their Fenrir experiences with this CPU overclocked?