What is the safe working tempreturefor an ATI Radeon HD 5450

[Lucifer]

My I5 desktop froze then shut down while watching youtube fullscreen.
When I fired it up again and went back to youtube fullscreen the GPU
was at 61 c.

 

[Lucifer]

On Tue, 14 May 2019 23:12:02 +1000, Lucifer
<LuciferMorningstar@bigpond.com> wrote:

My I5 desktop froze then shut down while watching youtube fullscreen.
When I fired it up again and went back to youtube fullscreen the GPU
was at 61 c.

What is causing the shut downs?