The last PSU I bought for my studio PC was a Corsair RM850 Gold Modular. I calculated what power I needed given the components (there are websites to calculate this for you, they said 650W) and bought higher than I needed. This PSU can run completely silently without the fan - that’s why I bought a higher wattage - the quieter the better for me.
But are you sure it’s the PSU? Is this an old PC that’s developed this fault or is it a new build? I recently had a lot of BSOD trouble with 9th gen intel, I ended up trying 3 mobos and 2 processors before I got a combination which worked - and even then I had to flash the mobo with the latest firmware.
If it’s not a new build then it literally could be anything, for example I just replaced a mobo in another PC which was failing and I started thinking it was the PSU, but after swapping PSU, graphics card and memory I finally changed the mobo and the problem went away. Difficult to track down of course unless you have spares, but maybe you could borrow you mate’s PSU to check?
I second @GargoyleStudio suggestion, get a beefier power supply, i9s are pretty hungry, what graphics are you using?
If you are concerned about power usage, don’t be, if anything you may use less, the 850w PS will be running at a more efficient status than a smaller one running full bore.