OK so long story short I need help choosing the most cost effective and efficient upgrades for my PC. Basically I am looking to just improve overall performance and I am trying to decide if it would be better to upgrade or to start building a new one. It's my first computer so it's been a journey coming from console, but I love it. i play on a 32" 720p tv and would like to have the same reults at 1080p. with the parts i have now i get 60+fps on all titles on medium sttings and 40-50fps on ultra. for all games. i think i average like 30-40fps on in fallout 4 heavily modded with enbs on ultra. the PC does well but i would really like to get more out of it if i could. if not i will build a new one. if it is going to cost more than $400 to get a small increase in performance ill just build a new one. anyway here are my stats. thank you for your time in helping a novice.
Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
NVIDIA GeForce GTX 1050 Ti
12GB DDR3
Corsair CX750
Samsung 128GB SSD
1TB Hard Drive
Motherboard: Dell XPS 435mt
Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
NVIDIA GeForce GTX 1050 Ti
12GB DDR3
Corsair CX750
Samsung 128GB SSD
1TB Hard Drive
Motherboard: Dell XPS 435mt