Computer Build ($700)

Helps if you post the build rather than a link -
CPU: AMD Athlon X4 760K 3.8GHz Quad-Core Processor ($73.88 @ OutletPC)
CPU Cooler: Cooler Master Hyper TX3 54.8 CFM Sleeve Bearing CPU Cooler ($16.85 @ OutletPC)
Motherboard: MSI FM2-A75MA-E35 Micro ATX FM2 Motherboard ($53.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($63.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.88 @ OutletPC)
Video Card: EVGA GeForce GTX 750 Ti 2GB FTW ACX Video Card ($124.99 @ NCIX US)
Case: Cooler Master N200 MicroATX Mid Tower Case ($39.99 @ Newegg)
Power Supply: EVGA 430W 80+ Certified ATX Power Supply ($24.98 @ NCIX US)
Monitor: Asus VE228H 21.5" Monitor ($123.99 @ SuperBiiz)
Wireless Network Adapter: Edimax EW-7811Un 802.11b/g/n USB 2.0 Wi-Fi Adapter ($8.98 @ OutletPC)
Keyboard: Razer Blackwidow Tournament Edition Wired Gaming Keyboard ($59.95 @ Newegg) - why so much on a keyboard for a low end build?
Mouse: Razer DeathAdder Wired Laser Mouse ($44.99 @ Directron) - why so much for a mouse on such a low end build?
Other: Microphone ($11.99)
Total: $698.44

$700 including $200 of peripherals doesn't give you much. I would've focussed more on the PC and less on the kb and mouse.
 
Here a really stronger $800 gaming build mate 😀

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($179.99 @ NCIX US)
Motherboard: ASRock H97M Anniversary Micro ATX LGA1150 Motherboard ($66.99 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($63.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ SuperBiiz)
Video Card: PowerColor Radeon R9 280 3GB TurboDuo Video Card ($179.99 @ Newegg)
Case: Cooler Master N200 MicroATX Mid Tower Case ($39.99 @ NCIX US)
Power Supply: EVGA 600B 600W 80+ Bronze Certified ATX Power Supply ($44.99 @ NCIX US)
Monitor: Asus VE228H 21.5" Monitor ($129.00 @ Amazon)
Wireless Network Adapter: Edimax EW-7811Un 802.11b/g/n USB 2.0 Wi-Fi Adapter ($8.98 @ OutletPC)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($28.99 @ SuperBiiz)
Other: Microphone ($11.99)
Total: $804.89
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-16 23:43 EST-0500