Average temperature for a VGA
You don't need to worry about your VGA Temperature. It is cool and normal, it is abnormal when it rises above 95 or 100. For gaming it can rise up from 66 C to 80 C.
For your satisfaction you can also see the picture below for normal temperature of your VGA. The average temperature of your VGA is 68.5. So no need to worry about. But if you overclock it then you will need a better ventilation, better heat sink and may be a better cooler for your system.
Great to hear 50 degrees for gaming is still normal, like what you said I think I need better cooler.
Thanks a lot Bryan Miguel