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Custom PC Parts Compatibility

Mainly general things such as flash games and YouTube, but some games would be nice such as Minecraft. (Sorry, I've been a meber all of 10 minutes)

 
did some changes
PCPartPicker part list: http://pcpartpicker.com/p/qNpqWZ
Price breakdown by merchant: http://pcpartpicker.com/p/qNpqWZ/by_merchant/

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($209.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($26.92 @ OutletPC)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($129.99 @ Amazon)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($79.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($48.47 @ OutletPC)
Video Card: Sapphire Radeon R9 280X 3GB Tri-X Video Card ($199.99 @ Newegg)
Case: Corsair 300R ATX Mid Tower Case ($59.99 @ Micro Center)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($16.99 @ Newegg)
Total: $759.33
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-11-23 20:31 EST-0500
 
Would you be willing to explain those changes and why you made them? Thanks