Bits on my PC either are breaking or making too much noise, so I'm gonna changing the whole lot. I've already added a few new bits such as my graphics card and my case (so those won't change). My current setup:
Fractal Define Desire S, with 2 standard case fans
i3570k CPU with Coolermaster 2012 Evo heat sink and 2 x NF-F12PWM Case Fan 120 mm
Nvidia GTX 970
Corsair AX 850
Some DDR3 RAM