[SOLVED] Worth it to just upgrade GPU?

[Bolychkanov]

My old gtx 780 has finally failed on me (code 43 hardware error). So I was wondering if its worth to just replace the GPU instead of having to rebuy a whole new rig? I only play old games like csgo/dota 2 and browse the internet, for reference.
The rig is currently
CPU: i7-4700k 3.5ghz
RAM: Corsair 16gb 1600mhz
PSU: Corsair TX750W
Mobo: Asus Z87-Pro
Cooler: Corsair H55
Case: CM 690 II Advanced

And what compatible midrange GPU would you suggest?
What are some things I should consider when replacing a GPU? Can old junk software interfere with my new installation? Should I upgrade from Win7 to Win10 before replacing the GPU, to get a "fresh start"?

 

[2spooky]

You rig is quite powerful , the weak link was that 780 , depending on your budget you can get an rx 580 or gtx 1070 , i guess even a gtx 1080 if u OC ur cpu to get rid of that little bottleneck. But best bang for buck is the rx 580 if your budget is low.