PSU question

[ANDARIAL]

I have a corsair TX 850 running a 3700x am4 not OC
power color 6700XT fighter gfx,currently standard no OC max temps seen were 90oC @junction
Plenty of air flow in case

Been getting a few crashes to Desk,psu must be well over 10 years old now only happens on Destiny 2.ALL other games and benchmarks/stress test ALWAYS have passed
Game files have been tested and passed as has SSD games are on
NOW i have a backup psu which is a EVGA 600W 80 plus,BUT this is quite old too at least 6 years i reckon but has not seen more than50 hours powered on MAX
Would this psu run my gaming rig?even as a trial.don`t want to remove old psu and try this one if no good
opinions please or should i buy a new psu?what one if so at around £100 if possible

 

[ANDARIAL]

I think I worded it wrong
It shuts down the game and goes to steam menu
Weirdly I only seems to go with destiny no other game or stress trips it shut .was thinking of trying the 600 watt PSU to see if that stops it .will have a look at the error logs later

 

[ANDARIAL]

Well i just finished a 2 hour session and no crashes
Damn thing is sooo intermittent,can go weeks without a problem then bamm a couple of times a day.As it is only this one game it all points to it being a game issue but did not find any issues reported online

I'm happy to be proved wrong, but that really doesn't sound like a psu problem to me.

Yeah cannot find where i got the psu from or how old but has got to be over 10 years,i got it to run 2x r270 back in the day i think i remember

 

[ANDARIAL]

Blutaked a 80mm fan to the psu inside the main case,`seems`to fix it fingers crossed
Air from psu during gaming feels quite hot to me but psu fan is working properly,psu is drawing cooler air from bottom of case as well....weird