Ok, I have decided to change my CPU cooler because I think its not sufficient enough to cool my not so old LGA775 Q9550 specially in summer seasons as I live in a tropical country in Asia and we have 4 seasons Spring, Summer, Autumn and El Niño Summer at around 30°C-36°C ambient temperatures. Currently overclocked it to 3.40Ghz at 1.23750v and the temps were around 67°C-69°C. And is lower when I decrease the voltage to 1.21875v. (Avoiding 70°C higher) I'm not sure if NH-C14/NH-D14 will fit my MOBO since I have 4 Corsair Dominator RAM's but I'm pretty sure it'll fit in my case. (Gigabyte 3D Aurora 570) Corsair H100 is a sure perfect fit although I don't know if liquid cooling is the best at high ambient temps in hot countries. Here's some pics: I think NH-C14/NH-D14 will hit my RAM.