Repasted my R9 290. Here's some bench
I ran these with the following fan curve which is nigh silent unless at full load.
Spoiler
Stock 1050MHz, -25mV. Max Temp 78, final stable temp 77
Spoiler
Low-power mode 700MHz, -75mV. Max Temp 72, final stable temp 71
I don't care much about huge gaming performance out of this guy, but I'm quite impressed with the temps after repasting. Especially the low-power one which is what I use most of the time.