This is why the OC models are such terrible value, many don't boost higher than the non OC.
Depends if OC models are actually properly binned (doesn't seem to be the case with Ampere) and/or if they have higher power limit and substantially better cooling than the lesser models. With Ampere so far there doesn't seem to be much advantage to the higher OC models and in many cases AIBs seem to be playing silly games with the line up and availability to keep prices high.