Worth getting a 850w I would say. As it is always good to give your PSU some breathing room by not running it full load. Like my PSU fan never spins up and runs at a higher efficiency by using around half its rated power.I'm looking to maybe move up to a 3080 when launched. I know it's a question no-one can answer definatelty but what are the chances my current PSU (Corsair non-modular 650W) will be up to the job? I've been offered an 850W one (at a cost) but not sure if I will "need" it.
All the rumours say the 3000 series will be power hungry, especially if you OC. But we won’t know for sure until next month.