Re: [Trisquel-users] Overheating of Radeon HD 8550G when using open-source driver

[vitacell]

i3, or i5-5200u or i7-5500u have a HD5500 gpu. Never more I can recommend  
Nvidia or ATI/AMD. All AMD are a furnance toaster chips, are very very hot.  
If you want 3d with most compatible drivers and stable FPS, go with Intel. If  
you want more performance, more FPS but unstable, you can get Nvidia Kepler  
chip, (gtx650....gtx770)

https://nouveau.freedesktop.org/wiki/CodeNames/#NVE0
and when you want performance, every time you must reclock it before, and  
anfter downclock.