Would be plenty of power to run SLI as well, my sys only runs at about 300 watts gaming. I use the Corsair link to control the fan anyhow so that it works at the lowest 40% fan spins aprox. 750rpm. Whisper quite but keeps the psu about 5’C cooler in doing so, just because I like keeping my sys cool.
https://www.amazon.com/CORSAIR-AX1200i-Platinum-Certified-Modular/dp/B008Q7HUR0