Oh, so they shifted the power limit for it... That makes mentioning the setting in percentage misleading. That being said, the card will throttle down hard if pushed above 180W anyway.

In either case I was originally wondering about being able to reach >500 sol/s at 3.4 sol/J; now that I know it's not a sustained figure it doesn't matter. I was thinking perhaps your card was really well-manufactured or you won the silicon lottery big time with it, but ~510 sol/s at 162W is something achievable on mine as well (~508 at 158 here).