How are you getting your 210W power reading? With a Kill-a-watt or similar?
I'd be surprised if it's not more like 250-300W for just the card with a 120% PL like you've shown
I think it should be at around 300W too
same, I have the SC2 Hybrids and they hit 720-740ish around at 250 (Edit: forgot to add that its with no core clocking, just default settings)