Hello, I've got a 5810 with 16gb ram, 685 PSU and I'm trying to install rtx 3070 (gigabyte eagle) computer is not booting up, in the card I have 1 - 6 pin and 1 8 pin and in the psu board only 2 6 pin connectors, any chance this computer will work with rtx 3070 without replacing the PSU to higher psu?

If not what is the.top GPU I can connect? I'm using it as a media server that streams media to external clients

Thanks ahead Erick