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What AiB are you getting? A board partner like Gigabyte or Asus have factory overclocked cards that are more power hungry than a reference 7800xt. And AMD already states 700w as a minimum recommendation. Nvidia also states 700w for the 4070ti. Same thing happens, board partner cards will draw more power.

I’d stick with 750w at minimum. Give yourself more overhead since psu’s are more efficient that way.

Either way, the current cards are power hungry. There’s no way around it without going for a lower tier card, but at that point I don’t think the gains are worth it. Maybe a regular 3070 if you can find one cheap enough.

The 7800XT (263W) has over 100W higher TDP than the 2060 (160W). It ultimately comes down to what other components you have, but you will be pushing the ceiling on a 650W PSU with the 5800X (105W).

You are under the limit based on TDP, but during peak loads, may not have enough overhead to not reduce the life of your components. That said, if you have fewer than 4 DIMMs of RAM, and only M.2 SSD storage, you are probably fine.

Let’s round up and say 75W for Mobo, 32W for RAM, 10W for storage, and 5W for LEDs, you come out right at 500W. Add 20% for thermal overhead, and you’ve got 600W. Very close, but should barely be stable.

This assumes a reference GPU. An OC edition could easily blow this calculation, but do your own math.

Definitively, buy a kill-o-watt, fire up a CPU+GPU stress test, and measure power draw at the wall. Add 100-200W to account for the new card, and see if it exceeds 650W.

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Put your build in then change the components to the new ones

I'm running a 3080 and a 5600x on a 650w psu (the only one I could find in my budget in sfx form factor). It's been fine, but I kinda feel like it's already pushing it. Because of the 5800x I'd suggest go 750w.

like you'll be fine, but id get and 850 so you stay at the peak efficiency marks