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1 year agoIf you’re willing to risk it and just try it out first with the old PSU then i would definitely try that first. I have the same PSU as you and i recently upgraded to a 6950xt. So far it’s been running just fine even though AMD recommends a bigger power supply. I was also using a sapphire nitro+ vega 64 before this, which was also quite power hungry when overclocked and never had any issues. I’m not sure how much power a 7900xt draws though.
Is you specifically want a wayland compositor like hyprland, you can try sway or qtile. I’ve also heard good things about river but never used it myself.