@whoololon very good, thanks for the help
When I have the new cooling installed I will keep you updated

The issue is that this is such a bad idea because, if the power supply is of quality and sufficient power, one is more than enough.

If you are going to put a generic one, or one of those with a trendy name with a sticker that says "87+ Golder Retriever 800 W"... which then have a huge ripple (and if they deliver 300 W real, we can be very happy), for that it doesn't matter if you put two, three or four power supplies, sooner or later you are going to have problems anyway.

Likewise, if we buy two good power supplies what we are doing is throwing money away.

In short, it is possible, but it is completely unnecessary in a home PC, no matter how high-end it is.

I don't know how you're doing with temperatures, but that Seidon will have a hard time keeping the i7 6700k below 64ºC (TCASE) if you touch the voltage even a little.