Reference Gigabyte R9 290 Very Hot Idle

Mac070

Admirable
BANNED
So basically I'm on the internet (pretty much idle ) listening to music on YouTube . My R9 290 gets really hot , hitting 90C (30%) Fans Auto . I have my fans on auto when I'm not gaming . Here is what I see while on the internet
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HWMonitor

AMD Radeon R9 200 Series
Value Max
-Tempatures
TMPIN0. 70C. 90C
-Clocks
Graphics 881MHZ. 947MHZ
Memory 1250MHZ. 1250MHZ
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The Value tempature was at 90C before and the fans only went up to 31% On Auto ?
So basically I'm wondering what I should do ?