Safe Crossfire GPU temperatures?

I recently build a PC with a single 6950, and im thinking of crossfireing it, but i went to my friends house to check out his crossfire build and the load temperatures were 90 C for his first GPU on load WTF. Is 90 C (194 °F) even a safe temperature? But the second GPU was running on a cool 70 C (158 °F). He didnt overclock his GPUs.

So is 90C (194 °F) a safe temperature (full load) for the first GPU running crossfire?

Doubt it's on max load unless he's running some kind of burn-in test. Also it's hella high but still safe (95°C is the limit). He definitely needs to upgrade cooling in his case