PC cooling help

[Govedo13]

Noctua NH-D15 is really quiet and performs better than some closed loop watercoolers.

+1
Non custom closed loop watercoolers are waste of money. You can get proper cooler for 40-60E. Noctua are bit expensive but they do the job nice. For CPU personally I would go full http://www.thermalright.com/
Same results but cheaper. Slap a Macho or True Spirit 140 with 2x ty140 low RPM PWA fans on the CPU. For paste the best that I found due to many different types is Phobya HeGrease Extreme.

If you have also any corsair fans inside your PC -retire them- they suck. Check if you can mount the said 140 mm fans on sides and front they are great if not then search the net for effective low rpm( less then 1000) low Db fans.

Also check your PSU and your GPU fans if they are too loud you can replace them as well, however it would void your guarantee on PSU, if you keep the default GPU fan system and replace it with custom one the guarantee stays.
I suggest to use SpeedFan for managing your fans- really great program.