What should I upgrade in my computer?

Solution
In that case, I'd go for something like this if you're happy to go team red on the graphics card:

PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-8350 4.0GHz 8-Core Processor ($158.99 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($25.98 @ OutletPC)
Motherboard: Gigabyte GA-970A-DS3P ATX AM3+ Motherboard ($60.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($52.99 @ Newegg)
Storage: Corsair Force LS 120GB 2.5" Solid State Drive ($74.99 @ Amazon)
Video Card: XFX Radeon R9 290X 8GB Double Dissipation Video Card ($394.98 @ Newegg)...

RubixPenguin518

Estimable
May 1, 2015
14
0
4,570
You have only 120GB of storage. Are you recycling a HDD from elsewhere?

Also, what do you want it for? As a gaming build for 1080p it's fine. As a 4k build it might not be. As a video editing/animation PC it could do with (maybe) more RAM and processing power. It all depends on the intended function.
 

RubixPenguin518

Estimable
May 1, 2015
14
0
4,570
In that case, I'd go for something like this if you're happy to go team red on the graphics card:

PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-8350 4.0GHz 8-Core Processor ($158.99 @ SuperBiiz)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($25.98 @ OutletPC)
Motherboard: Gigabyte GA-970A-DS3P ATX AM3+ Motherboard ($60.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($52.99 @ Newegg)
Storage: Corsair Force LS 120GB 2.5" Solid State Drive ($74.99 @ Amazon)
Video Card: XFX Radeon R9 290X 8GB Double Dissipation Video Card ($394.98 @ Newegg)
Case: Rosewill STEALTH ATX Mid Tower Case ($79.99 @ Newegg)
Power Supply: Antec Neo Eco 620W 80+ Bronze Certified ATX Power Supply ($64.99 @ SuperBiiz)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer ($14.98 @ OutletPC)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($92.95 @ OutletPC)
Wireless Network Adapter: Rosewill RNX-N150PCe 802.11b/g/n PCI-Express x1 Wi-Fi Adapter ($11.59 @ OutletPC)
Keyboard: Cooler Master Storm Devastator Keyboard & Mouse Wired Standard Keyboard w/Laser Mouse
Total: $1033.41
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-03 07:57 EDT-0400

Note: I can't be sure of whether the card will fit, the card is 11.61" (295mm) and the case is 19.65" x 8.23" x 19.65"
 
Solution