Is a 650W 80+ Gold PSU sufficient for my Ryzen 7 7800X3D and RTX 4070 Super?

The RM650 is a solid PSU and technically has enough wattage for your build. Just be cautious about future upgrades or overclocking needs.

For a worry-free experience, I’d go for 850W. Better safe than sorry!

Yes, it should be enough for now. But keep in mind, if you're thinking of upgrading your GPU later, you'll want more headroom.

I have 600W with a 5800X and RTX 4070, without any problems! Your components draw a bit more power than mine, but with a 650W PSU, you might be okay. Just to be on the safe side, consider aiming for 700W or more for future flexibility.

Honestly, I wouldn't entirely trust 650W for that setup. I had a 3070 Super with a similar 650W Gold+ PSU, and I faced random shutdowns during gaming. Even if it seems enough, tolerances can lead to issues. You can grab a 750W or 850W PSU fairly cheap these days, and it’s just better for peace of mind!

I recommend going for at least an 850W PSU. It’s important to have that extra headroom for unexpected power spikes, especially if you plan on overclocking. Being right at the limit can lead to issues.