With decent cooling, the vega gpus can be overclocked to give significant boost. I don't think so. The article touched on the fact that the watercooled one is

With decent cooling, the vega gpus can be overclocked to give significant boost. I don't think so. The article touched on the fact that the watercooled one is already seeing a disproportionate ramp-up of power in order to ramp up clocks. That says to me that it's beginning to eat in to the headroom of the card and will soon begin to run up against its voltage wall. That suggests to me that they're already pushing the card pretty hard to get the stock performance levels, which doesn't leave a lot on the table for overclockers.