Would DDC upgrade make a difference for old DACs ?

I have multiple older DACs that use CS8412 receiver chip and my current DDC is Gustard U12 w/ Acusilicon AS318B which is a femto clock. Would I gain anything by upgrading DDC, e.g. to Gustard U18 w/ Acusilicon AS338, given the receiver chip in DAC is lowly CS8412 ?