Need help finishing my build

[calthouse009]

I am trying to build a gaming computer...i think i have it all completed but what i need your help on is do i need case fans if so what should i get/how many....and will my psu work for the build...if you feel something would work better please link it
Thank you very much for your help
http://pcpartpicker.com/p/WyHpQ7

 

[numanator]

I would do this:

PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-8320 3.5GHz 8-Core Processor ($159.99 @ Newegg)
CPU Cooler: Noctua NH-D14 65.0 CFM CPU Cooler ($69.99 @ Newegg)
Motherboard: Gigabyte GA-990FXA-UD3 ATX AM3+ Motherboard ($116.00 @ Newegg)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-2133 Memory ($87.99 @ Newegg)
Storage: Samsung 840 EVO 120GB 2.5" Solid State Drive ($77.99 @ NCIX US)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($55.98 @ OutletPC)
Video Card: Sapphire Radeon R9 280X 3GB Dual-X Video Card ($239.99 @ Newegg)
Case: Azza CSAZ-XT1 B ATX Full Tower Case ($99.98 @ Newegg)
Power Supply: SeaSonic 620W 80+ Bronze Certified Fully-Modular ATX Power Supply ($69.99 @ Newegg)
Optical Drive: LG GH24NSB0 DVD/CD Writer ($13.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($84.98 @ OutletPC)
Total: $1061.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-08-15 19:30 EDT-0400

The Apevia is a junk PSU, I wouldn't trust it with a super budget build, let alone a decent build like this. Seasonic makes some of the best, quietest PSUs in the industry. I also lean towards air coolers since they do the same job for cheaper. The only downside to a cooler like the Noctua NH-D14 is the size.

You could also get an intel i5 build for around the same price but it would be a no-OC build.
Case fans shouldn't be needed but I am not positive since I am not familiar with the case you picked. I would probably add case fans as needed once the computer is built if you notice you need them.