What Should I Upgrade Next?

[carterdavis0606]

Hey guys, I have been gaming on PC for 3 and half years now and I can only wonder, what shall I upgrade next? I have upgraded everything in my PC at least once except for my PSU. Money is not a problem and all I want is great performance, but I want it to be worth the price tag, not overpriced crap. Here are my specs:
GPU: AMD RX 480 8GB

CPU: Intel Core i7-6700K 8M Skylake Quad-Core 4.0 GHz LGA 1151 91W BX80662I76700K Desktop Processor Intel HD
CPU Cooling: CRYORIG M9i Mini Tower Cooler for Intel CPU

Motherboard: MSI Z170A Gaming Pro Carbon LGA 1151 Intel Z170 HDMI SATA 6Gb/s USB 3.1 ATX Intel Motherboard

RAM: GeIL EVO X 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 3000 (PC4 24000) Desktop Memory Model GEX416GB3000C15ADC

HDD: WD BLUE 2TB
M.2 SSD: Samsung 960 Evo 500GB

PSU: EVGA 500 B1 100-B1-0500-KR 80+ BRONZE 500W Includes FREE Power On Self Tester Power Supply

Thank you guys for reading! Make some suggestions on what I should upgrade next!

 

[jankerson]

The PSU and Graphics card.

PCPartPicker part list / Price breakdown by merchant

Video Card: Asus - GeForce GTX 1080 8GB ROG STRIX Video Card ($539.99 @ Newegg)
Power Supply: SeaSonic - FOCUS Plus Gold 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($78.98 @ Newegg)
Total: $618.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-10-12 09:28 EDT-0400