Advice on whether to upgrade or buy a new gaming PC. ~$1,000

Bauer18

Honorable
Sep 17, 2013
10
0
10,510
Gears of War 4 was recently released, which is bringing me back to PC gaming outside of League of Legends. I was looking to upgrade my GPU to an Nvidia GTX 1070 to play it, but with my PC being just over 3 years old....I was wondering if it was time to buy a new PC. I have Gears on both console and PC, so I'm okay with console for the time being...but I want to play on PC eventually.

Currently Specs -
CPU: Intel Core i7 3820
Motherboard: MSI X79A-GD45 Plus
RAM: 16GB Quad DDR3
GPU: NVIDIA GeForce GTX 660
PSU: Pretty sure its a 800w PSU

Approximate Purchase Date: Anytime
Budget Range: ~$1,000
System Usage from Most to Least Important: Gaming mostly.
Are you buying a monitor: Possibly
Parts to Upgrade: GPU
Do you need to buy OS: No
Preferred Website(s) for Parts: Does not matter to me
Location: Detroit, Michigan
Parts Preferences: N/a
Overclocking: Maybe
SLI or Crossfire: Maybe
Your Monitor Resolution: Currently 1920x1080
Additional Comments: Gears of War is the driving force for this.
And Most Importantly, Why Are You Upgrading: No upgrades in 3 years so it's time.