Who is saying the soldered ram is never overclocked? You cant overclock changeable ram by default because you don‘t know what the customer will use. But by sold

Who is saying the soldered ram is never overclocked? You cant overclock changeable ram by default because you don‘t know what the customer will use. But by soldering the ram you know you will use very specific parts, so you could (maybe they do?) tune the settings because it does not have to work with thousands of combinations.