My 290x also is working fine. The issue is locking the fan speed at 20%. If you use a 3rd party tweak utility and manually configure the fan speeds yourself, no more problem. Even without doing that, it doesn't seem to be affecting mine so it seems it's not as widespread as some people would have you believe because nobody else with an AMD card I've spoken with about this has had the issue either.
Plus, a beta version was released today that addresses the fan issue.