What GPU cooling mods actually work for lowering noise without raising temps?

Has anyone here tried custom cooling mods on their GPU to reduce fan noise but still keep temps under control? I’ve seen folks talk about fan curves, shrouds, and even small shroud airflow guides, but not sure what really makes a difference in real use.

What mods or settings have you actually tested on your card, what parts did you use, and how did temperatures and noise change after? Looking for something that’s not too expensive but actually works in everyday gaming.