for his future 9900k+2080 ti with 100+ watt headroom system? 550w is a perfect fit here
so you would include a 10 year old platform, a couple crappy HEC's and let OP take that over some decent PSUs from the same suppliers, just sold by different companies?
the only thing they share is that both are EVGA and both are Superflower. they don't even look the same
and with that, they're also now EOL since EVGA and Superflower don't work together anymore
with that said, I'd look into these
https://uk.pcpartpicker.com/product/dDH48d/corsair-txm-gold-550w-80-gold-certified-semi-modular-atx-power-supply-cp-9020133-na
https://uk.pcpartpicker.com/product/bqVD4D/corsair-rmx-2018-550w-80-gold-certified-fully-modular-atx-power-supply-cp-9020177-na
but with the current stock this might as well change tomorrow again, keep a close eye on what's availible, and feel free to ask about any unit you find