$700-$800 Gaming PC build

[DubsCryptic]

I want to spend around $700-$800. I need an OS I'm not sure to go with Windows 8 or 7. I already have a monitor, keyboard, and mouse. I'd like to play H1Z1, CS:G0, DayZ, Modded Minecraft, and Battlefield.
Thanks for the help!

 

[okcnaline]

Which BF?
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor ($173.95 @ SuperBiiz)
Motherboard: ASRock Z97 EXTREME4 ATX LGA1150 Motherboard ($125.98 @ Newegg)
Memory: Kingston Fury Red Series 8GB (2 x 4GB) DDR3-1866 Memory ($62.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($44.99 @ Amazon)
Video Card: Sapphire Radeon R9 280X 3GB Video Card ($189.99 @ Newegg)
Case: Fractal Design Define R5 (Black) ATX Mid Tower Case ($107.99 @ SuperBiiz)
Power Supply: XFX XTR 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($61.98 @ Newegg)
Total: $767.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-09 16:57 EDT-0400

 

[TheLonelyShrub]

If you are willing to pay little extra you can get a GTX 970, if not you could go for a R9 290.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor ($163.95 @ SuperBiiz)
Motherboard: ASRock H97 PRO4 ATX LGA1150 Motherboard ($83.89 @ OutletPC)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($63.89 @ OutletPC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.49 @ OutletPC)
Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE 3X Video Card ($295.00 @ Newegg)
Case: Corsair 200R ATX Mid Tower Case ($57.99 @ Micro Center)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($61.99 @ NCIX US)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.79 @ OutletPC)
Total: $866.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-27 01:09 EDT-0400

 

[doodleup]

http://pcpartpicker.com/parts/partlist/
CPU: Intel core i5 4440 3.1GHz (A great CPU.Can Handle all latest games.I t is 4 generation Intel CPU.Mostly Games have 2 generation or 3 generation CPU in their recommended settings)
MOBO: Asus Gamer B85-pro (A great choice for a gamer like you.This MOBO can support both SLI and CrossFireX U can go with a dual r9 295x2 or dual Titan Z on it as easy as peazy It also allows Overclocking in future if You buy i7 4790k or i5 4690k You can easily overclock it)
GPU: EVGA GeForce GTX 960 2GB GDDR 5 128-bit (great GPU can run any game on ultra 1080p You throw on it.It competes with AMD Radeon R9 280 and It can easily beat hell out of R9 270x and GTX 760)
Case: Corrsair Corbid series 200R
Storage 1: Sandisk Ultra 256GB SSD Sata 3( It is reliable and much better than 1tb HDD.Put BF 4,BF 3,Minecraft,Skyrim and NFS Rivals in it and still space will be available for you to put 2 to 3 more games like Splinter Cell Blacklist and Crysis 3)
Storage 2: Kinston 60GB SSD (It is for OS and remember OS only takes around 30GB You can use remaining 30GB for Your Movies Songs or Your Gameplays)
Ram: Corrsair Vengeance 8GB DDR 3 1600MHz( Most games want only 2GB of ram to run them well but new games want 4 to 6GB of ram to run them well 8GB of DDR3 ram makes it sure You have more than enough)
DVD ROM: It comes with the case (if not pick any cheap one)
Use any good 500 watts PSU

 

[doodleup]

Download a Cracked version of Win 8.1 Pro x64 or Win 7 Ultimate x64