Gold is isolated from direct factors of economic growth but silver is an industrial metal
Gold is an industrial metal too. It is inside of almost every electronic device there is.
Correct. I bought a little bit of it a few months back to have more bitcoin.

...and it worked out!
...this is what I was talking about: https://www.corsair.com/us/en/Power/Plug-Type/RMx-Series/p/CP-9020092-NA
Gold power supply is more efficient than silver (and of course more expensive), so I bought the one with gold rating and Ethereum GPU mining worked out pretty good with it.
Using silver instead of gold within a power supply makes the power supply less efficient.