Any gains from benefit of lowering liquidcooling temps from current norms?

Hello, always thought lower was better, example CPU mhz benefit from lower temps but for direct to chip, lets use pg25, if the server blade inlet temp today is average of 30 degrees C, what if it was lowered 20 degrees? Wouldn’t that benefit say 5 or 10% gpu performance? setting aside energy consumption to get coolant colder, but just pure GPU performance like running at bottom of operating range or slightly below? Thank you- Ken