rx 7900 gre

I was looking at graphics cards for 1440p n stuff and I stumbled upon the RX 7900 GRE PowerColor HellHound. It says on the website that it recommends a 750 or greater PCU. I have a 600w and I used PC part picker to see if I did, but it says for my entire setup if I had a 7900 GRE I would only...