When the PlayStation 5 is working to really render and run a game at the highest possible fidelity, that naturally places a strain on the console’s components, including its internal processor and GPU. If you hear the fan more distinctly than usual while playing a graphically intensive game, that’s just the cooling system working a bit harder than usual to accommodate the increased processor load, according to Sony.
It’s also worth noting that the version of the PS5 that circulated when the console was originally released in 2020 is slightly different from the ones on the market now. The original PS5 was known for having a cooling fan that was a bit on the loud side. Subsequent releases of the console were updated with a different fan component that was markedly quieter than the original version. If you bought a PS5 when it was first released, that could be the reason your console fan seems weirdly loud.
