I was about when the 480 was released and it didn't worry me that it got ripped to shreds for the temps and I never bothered defending it, as it was true but the shoe on the other foot results in mass defense and untruths.
Could you get a good aftermarket cooler version of the 480 that made it run around 70c at very quiet noise levels without having to fit it yourself? You do know the 290 is only hot if paired with the reference cooler?