Need help upgrading my PC

[Xtctrip]

Hi guys, I'm about to get my tax money back and I was looking to see how I might upgrade my PC. At the moment I play WoW, Dota2, and Diablo mainly, with a few other games I may play on occasion, here is my current setup

CPU:AMD FX 4100 3.60 GHz
CPU Fan: Rosewill RCX-Z1
PSU: Coonix 600W (Can't find a link for this one)
Graphics Card:HIS H777FN1G Radeon HD 7770 GHz Edition
Ram: CORSAIR XMS3 8GB (2 x 4GB)
HDD: Seagate Barracuda 500GB
Motherboard: BIOSTAR A960A3+

I'm looking to be able to stream really and if possible looking for multiple ways to do it could spend upwards of 800$, thanks for the help guys.

[Deleted]

I am not sure how much upwards of 800% you would mean so take this as a ballpark. You also didn't mention what case you got , maybe could re-use that. The following build assumes you use your old ram and hdd for storage.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($224.95 @ SuperBiiz)
CPU Cooler: be quiet! PURE ROCK 87.0 CFM Sleeve Bearing CPU Cooler ($33.99 @ NCIX US)
Motherboard: Gigabyte GA-Z97X-SLI ATX LGA1150 Motherboard ($114.99 @ SuperBiiz)
Storage: Crucial BX100 250GB 2.5" Solid State Drive ($94.99 @ Adorama)
Video Card: Asus GeForce GTX 970 4GB STRIX Video Card ($329.00 @ NCIX US)
Case: Corsair 200R ATX Mid Tower Case ($49.99 @ Amazon)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($56.99 @ NCIX US)
Total: $904.90
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-03-09 02:48 EDT-0400