rtx 2060 8gb

Hello, I have this build PSU: Corsair CX650M CPU: 17-4790 MOBO: 18e4 with h81 chipset ( it's from an old HP Elitedesk 800 G1 TWR) BIOS: 20.02.2020 RAM: DDR3 32GB (4X8) When I connect my RTX 2060 Super 8GB to the mobo with the PCIE express without the 6+2 pins connected from the PSU it turns on...

Anyone else having RTX 2060 8GB in their pc and while playing some type of games it sounds like an airplane? Ready or not, warfare, red dead etc, all those games and my pc sounds like its about to fly out from my room. Now when I try out the game "Ready or not" and have on Epic graphics, its...