yeah I'm pretty sure the newer cards are hittin in the 70s possibly 80C, but I'm not 100% sure on that.
Your temps seem fine compared to other cards, although my friends 9600XT 256mb stays in the 30's-40's Celsius when he games
I would like to know this cards temps though because the first one I got had a small fan on it, and it later fried....must have overheated which I'm pretty sure it did. I got it RMA'd and it came back with a much bigger heatsink on it.