Should be OK as a gaming PC but there are a lot of ways to improve it.
- The FX-6300 isn't great for games, you would get similar gaming performance out of a cheaper Pentium G3258. Alternatively an i3 would be even better and that's only a bit more.
- I'd buy both RAM sticks together so they're a matched pair and have guaranteed compatibility in dual channel mode. Gives you a small performance boost. Nothing you will notice in games so this isn't the end of the world if you don't to be honest.
- That case can fit an ATX motherboard, you might as well get one for the extra expansion options.
- I seriously doubt you will need the extra fans, they are just going to add noise really.
PCPartPicker part list:
http://pcpartpicker.com/p/RL2YZL
Price breakdown by merchant: http://pcpartpicker.com/p/RL2YZL/by_merchant/
CPU: Intel Core i3-4170 3.7GHz Dual-Core Processor ($109.99 @ Newegg)
Motherboard: ASRock H97 Anniversary ATX LGA1150 Motherboard ($72.99 @ SuperBiiz)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($44.49 @ Newegg)
Storage: Toshiba Product Series
😀T01ACA 1TB 3.5" 7200RPM Internal Hard Drive ($46.99 @ NCIX US)
Video Card: EVGA GeForce GTX 960 2GB SuperSC ACX 2.0+ Video Card ($174.99 @ NCIX US)
Case: Thermaltake Commander MS/I Snow Edition (White/Black) ATX Mid Tower Case ($44.99 @ Micro Center)
Power Supply: Antec Green 450W 80+ Bronze Certified ATX Power Supply ($45.99 @ SuperBiiz)
Total: $540.43
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-07-26 17:51 EDT-0400
That build would give you around the same gaming performance and comes in quite a lot cheaper. Has other benefits as well; it consumes less power so should run cooler and quieter and has a newer motherboard with more expansion possibilities