If your card was ruined, it wouldn't be showing anything at all. However, those temps aren't looking good. What you may need to do is apply more thermal paste. Your heatsink is probably perfectly fine. As well as the fan on the heatsink. YOu need to probably get more thermal paste. Shouldn't cost much, get some Artic Silver 5 thermal paste, that will be a HUGE improvement. Definetly worth it.