Hello guys i using this PC around 3 years and i want to ask you about upgrade components. Should i upgrade something or buy new PC? I using him for games but its not so fast like 3 years ago. So if you can help me...

Ty so much

Intel Core i7-4790K (4 GHz, 4.4 GHz turbo ), 8MB Cache, HyperThreading), harddisk 256 GB SSD a 1 TB HDD; 16 GB RAM DDR3 1600 MHz; graphic card NVIDIA GeForce GTX 960 2GB GDDR5,  Blu-ray Reader, GLAN, HDMI, USB 3.0, OS Windows 10.1.