Is it okay?? hmmmm its high, but liveable... My 260's runs at 65C on 100% load, but is slightly loud. 115C will fry your card, and you will have bsod and whatnot, the max is 110C, but aqrtifacting can be lower.
You can swap out for slower and there by quiter fans, and be better off. Getting a airflow is the important thing.
Also remember, if your cards hotter, EVERYTHING is hotter.