Likely not more than the SF600 can handle. I did trip my UPS a few times benching but it has some years on it and rates at 500w (?) I think. It has been retired.
24/7 I just undervolt and set HBM at 1000. Also now running the 200w board power limit set via the switch on the card as well.
With the stock power limit and +50% power the card alone can hit 250+W. Need a meter for system draw.
I did the Spock eyebrow raise at that. I got myself a UPS not many months ago and your post reminded me I should probably reevaluate how much power I'm drawing on that between my computer, monitor, headphone amp, and various charging accessories. This is especially true if I ever want to upgrade anything...
I wonder how power draw on the Radeon VII is going to be... I realize this is the Corsair thread and not the AMD one so I'll cut myself off with that one.
$180 USD for the SF750. Still not the most expensive thing in a prospective HEDT mini build but still... The price of that last 150W over the SF600 is 50% of its cost. Goes to show how hard it is to squeeze out those extra watts in the same tiny box.