Ps4 Pro is loud at 4K resolution why and what the difference between 2160p RGB and YUV420?

And although my ps4 Pro is always quite loud when I set it to 4K very loud. If I screw her back to 1080p she is totally quiet.

She is over one year old and is used very long day

Why is that?

what is the difference between 2160p RGB and 2160p YUV420 I do not check this

The volume is normal at 4k. Even at Rocket league 4k it turns up nicely.

The difference between RGB and Yuv is I think the signal. RGB is for 8bit panels and Yuv for 10 bits, respectively, the colors are "brighter". I'm not sure.

Did not understand that with the difference still

In short: The settings depend on your screen / TV on which you play. Cheaper devices usually only have an 8-bit panel, higher-quality a 10-bit panel.