Fortron is a reasonably good psu manufacturer.
They make psu's for many other brands.
Their units are tier 2-3 on this list:
https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true
So long as it keeps working, I would not change it out.
It should be good for a card as good as a GTX970.
Your R7-265 is a decent card. The GTX960 is only two tiers higher on this list:
http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html
You run the risk that you will be disappointed if you do not see good results.
In part, that might be because of relatively weak FX cores.
I suggest you play your games with the new monitor and see how you do.
Here are some tests to see how much your cpu or gpu are limiting you.
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To help clarify your CPU/GPU options, run these two tests:
a) Run YOUR games, but lower your resolution and eye candy.
If your FPS increases, it indicates that your cpu is strong enough to drive a better graphics configuration.
If your FPS stays the same, you are likely more cpu limited.
b) Limit your cpu, either by reducing the OC, or, in windows power management, limit the maximum cpu% to something like 70%.
Go to control panel/power options/change plan settings/change advanced power settings/processor power management/maximum processor state/
This will simulate what a lack of cpu power will do.
Conversely what a 30% improvement in core speed might do.
You should also experiment with removing one core. You can do this in the windows msconfig boot advanced options option. set the number of processors to less than you have.
This will tell you how sensitive your games are to the benefits of many cores.
If your FPS drops significantly, it is an indicator that your cpu is the limiting factor, and a cpu upgrade is in order.
It is possible that both tests are positive, indicating that you have a well balanced system, and both cpu and gpu need to be upgraded to get better gaming FPS.
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