Direct or Extension 40 Series

Hello,

I’ve got a 4080 Strix OC which has a 16 pin. What cable do I need or can I get? Also, I have an EVGA GQ 850

Do I get an extension 16pin to 3x8 then connect those 8 pins to 3 VGA slots on PSU?

Or is there another way to safely route one cable from GPU directly to PSU?

Willing to buy better/new PSU but if it’s doable with what I have then by all means.