I'm getting a reported ~150k PPD if I fold 24/7, which I don't.
Unfortunately there is much hit and miss with high end Radeon cards folding. When I had my 280X, half of the time the collection server was not working, which was disappointing as they chew through huge units taking a lot of time and is such a PITA to loose one. That is the main reason why I switched to a junior Maxwell, it works a lot better left unattended. Sure it picks a Core 15 from time to time, but is a lot better than a GCN card. And it does 50% of production of a GCN high end while using less than 25% less energy.