I do not understand why the PSU matters tho.
But why FPS matters though?
🤔 40 FPS is still playable, 60 FPS even more so. Anything above that is irrelevant surplus.
As said by
Metal Messiah. above, since PSU powers everything, it is
the most important component inside the PC. And just for conformation, knowing the make and model can tell, if you'd be looking towards new PSU as well, or not.
But of course, you already must be having a good quality PSU
Don't assume.
Time and time again, people who only give out wattage rating, often have sub-par or low quality PSU in use. Since when PSU is poor one, no-one is willing to share what it actually is. Hence why i asked about the PSU in the first place. And based by OP's reply, they have "decent", which usually means cheap, low quality unit.
E.g i have 0 issues sharing the PSUs i have in my builds;
* Skylake build - Seasonic PRIME 650 (80+ Titanium) [SSR-650TD], which was the best 650W PSU money could buy back in 2016, and which still is one of the best (if not the best) PSU out there. 12 years warranty among other things.
* Haswell build - Seasonic PRIME Ultra 650 (80+ Titanium) [SSR-650TR], small update revision of SSR-650TD, while still being top-of-the-line build quality, among other things. Also 12 years warranty, the longest any PSU has at current date.
* Old AMD build - Seasonic Focus+ 550 (80+ Platinum) [SSR-550PX], notch down from PRIME series, while still widely considered as good quality PSU. 10 years warranty with this one.
On top of that, conformation of my words in my signature, where everyone can see that i have the listed PSUs inside my PCs (plenty of pics from all of my PCs there).
Can even link reputable reviews of the PSUs i have, to prove their build quality (but i doubt there is interest in those).
So, yeah, never cheap out on PSU. And never buy used PSU either.