Often, members will ask questions regarding troubleshooting a system and the first question will be "What are the specifications for your system (make/model of all installed components)?" A typical response will include something like "750w Gold PSU". That sort of response offers nothing...
What are you planning on doing with your pc?
Whats your budget?
What resolution are you playing at ?
Will you be overclocking?
A general statement like this, im going to suggest the RTX 4090, its the most powerful gpu, idk what you plan on doing, but this should cover everything