Scottray :
Depends on your system configuration and if you're planning to overclock. Post you system build info.
Im not planning to overclock and this config is temporary. Im ordering a fourth fan tomorrow so when i get that 4th fan it will be 2 intake and 2 exhaust but all I have is 3 fans for now.
CPU: Intel Core i5-4590 3.3GHz Quad-Core Processor
Motherboard: Gigabyte GA-Z97X-UD3H ATX LGA1150
Video Card: MSI GeForce GTX 960 4GB (red)
Memory: Corsair Vengeance 8GB DDR3-1600
Storage: PNY 480gb SSD
CPU Cooler: Cryorig C7
Case: Corsair SPEC-02 ATX Mid Tower
Power Supply: SeaSonic 520W 80+ Bronze Certified Fully-Modular ATX
Optical Drive: Lite-On iHAS 124-14 DVD/CD Writer
Monitor: BenQ RL2455HM 24.0" 60Hz
4 cooler master fans
Theres also some extra parts like keyboard, mouse, etc.