$800 Gaming PC

[STL Luke38]

What do I need to change in order to make this build better and stay under $800 including the keyboard and OS. I would like to do some video editing and possibly streaming. I need to get the best I can so all recommendations are accepted.
http://pcpartpicker.com/p/MVXc7P

 

[Archaic59]

Maybe this would work for you:
-Better video card
-high quality PSU
-compatible case

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($178.49 @ OutletPC)
Motherboard: ASRock H97 PRO4 ATX LGA1150 Motherboard ($83.89 @ OutletPC)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($56.99 @ Adorama)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.63 @ OutletPC)
Video Card: Sapphire Radeon R9 280 3GB Dual-X Video Card ($184.99 @ Newegg)
Case: Deepcool TESSERACT BF ATX Mid Tower Case ($37.98 @ Newegg)
Power Supply: XFX TS 550W 80+ Bronze Certified ATX Power Supply ($63.98 @ Newegg)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.98 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.89 @ OutletPC)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($27.87 @ Amazon)
Total: $789.69
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-04 23:05 EDT-0400

 

[lcp1109]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($178.49 @ OutletPC)
Motherboard: ASRock H97M Anniversary Micro ATX LGA1150 Motherboard ($61.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($54.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.63 @ OutletPC)
Video Card: MSI GeForce GTX 960 2GB Video Card ($204.13 @ Amazon)
Case: Thermaltake Versa H21 ATX Mid Tower Case ($32.99 @ SuperBiiz)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($58.99 @ SuperBiiz)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($16.98 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.89 @ OutletPC)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($27.87 @ Amazon)
Total: $776.94
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-04 23:07 EDT-0400

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Xeon E3-1231 V3 3.4GHz Quad-Core Processor ($239.99 @ SuperBiiz)
Motherboard: ASRock H97M Anniversary Micro ATX LGA1150 Motherboard ($61.98 @ Newegg)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($56.99 @ Adorama)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.63 @ OutletPC)
Video Card: Gigabyte Radeon R9 270X 2GB WINDFORCE Video Card ($179.99 @ Amazon)
Case: Thermaltake Versa H21 ATX Mid Tower Case ($32.99 @ SuperBiiz)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($58.99 @ SuperBiiz)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($16.98 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.89 @ OutletPC)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($27.87 @ Amazon)
Total: $816.30
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-04 23:03 EDT-0400

 

[ykki]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($178.49 @ OutletPC)
Motherboard: ASRock H97 PRO4 ATX LGA1150 Motherboard ($83.89 @ OutletPC)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($56.99 @ Adorama)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.63 @ OutletPC)
Video Card: Sapphire Radeon R9 280X 3GB Video Card ($209.99 @ Newegg)
Case: Corsair SPEC-01 RED ATX Mid Tower Case ($44.90 @ Amazon)
Power Supply: SeaSonic S12II 620W 80+ Bronze Certified ATX Power Supply ($69.99 @ SuperBiiz)
Optical Drive: Lite-On iHAS124-14 DVD/CD Writer ($13.98 @ Newegg)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($27.87 @ Amazon)
Total: $738.73
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-04 23:16 EDT-0400

OS= http://www.reddit.com/r/microsoftsoftwareswap/comments/318630/h_windows_7_8_81_servers_office_visio_project/

You can get the OS cheap from reddit.
Improved your build.
You had a mobo which could overclock and a cpu which couldn't.
I have replaced both the cpu and the mobo. Both are very good and you won't feel the difference in performance between this i5 and the i5 that you had chosen.
A cheaper but still very functional case is added.
A badass 280x is added. The vapour x has the best cooling and the price is very good otherwise this card is at around ~ $250!
A TON better psu is added. It is of very good quality.

Hope this helped!