RTX 3080 and 2070s together?

[chris]

I have a
Corsair 275q case
Be Quiet fan
m2 samsung
64 gb Corsair ram
650w Corsair psu (how much would it require)
RTX 2070
I want to add a RTX 3080 also

 

[Alex Glawion]

Check the wattage calculator on the beQuit site, which will let you know how strong your PSU has to be. https://www.bequiet.com/en/psucalculator

Also: What's your motherboard?