Can I connect second cpu power via pci-e?

Question

Iron

There is a motherboard with power for cpu 8 + 4.
On the power supply, the output is only 8 pin for cpu.
The video card requires 8+6 pins. And a bunch of pci-e outputs from the PSU remain free.
The PSU is kilowatt, so it will definitely pull the load.
According to the PSU pinouts, as I see it, 8pin pci-e is quite compatible with 4 pin cpu.
But I'm worried, maybe there are some additional parameters and secret knowledge that I don't take into account?
Or can I still safely buy a 4pin cpu cable and plug it into the pci-e connector on the power supply?

concrete iron

Блок питания: GiNZZU MC1000
Материнская плата: ASUS TUF GAMING X570-PLUS(WI-FI)
Процессор: AMD Ryzen 9 3900XT
Видеокарта: ASUS TURBO-GTX1080TI-11G

Answer 1

Somehow you look bad.
The connectors do not mate in either shape or polarity.
The power supply of the processor and vidyuhi is different there + and - vice versa are located.

Look for an adapter to make cpu out of pci-e (6 or 8).
Of course, you should not buy the cheapest adapter for 100 rubles.