Long story short, I am wishing to finally upgrade my stock Intel CPU cooler. The problem is that I have Corsair Vengeance RAM in my computer, which sticks our of my motherboard a whopping 55 mm (roughly). At the same time i only have about 165 mm of clearance between my motherboard and my case. I am trying to find a CPU cooler with these restrictions in mind that will allow me to achieve at least a 4.5 GHz overclock. A couple that I think would work ( some one checking on this would be great) would be the Thermalright MUX-120, the Xigmatek Dark Knight II, or a Corsair H50. I would like to hear (especially from those who have Vengeance RAM) if anyone has any suggestions on what cooler to get, and opinions on the above ones. Bonus points if you can help me get rid of my $30 MIR card by keeping it under 30 bucks (willing to spend up to $60). This will be installed in a Rosewill Challenger case with an i5-3570k on an Asus P8Z77-V LK. And before anyone suggests it, no I am not willing to pop the heat-spreaders off of the memory.