Thermal Pad thickness, brand and Type of GPU memory (surrounds the GPU chip) iMac late 2009?

Hello. I'll be repair (and cleaning after 6 years) 2009 end iMac coz ' the screen has five 2cm thick, uniformly distributed, striped of vertical lines (it is still usable in Mode safe), which indicates a good chip GPU (used to pass all the tests of stress for the GPU and GPU memory) but a subcomponent that surrounds it has weld fracture joint coz' it may have overheated in the summer (which has a record high 36 to 42 degrees Celsius) and OS X might not revved up fans enough that may have contributed to cause solder joint breaking.

When I open the iMac Monday, the thermal pads for memories of the GPU (surrounds the GPU chip I use a thermal paste with) may not be in good condition more. I was wondering how thick cushion is suitable for the GPU of the iMac (an ATI Radeon HD 4850 512 MB), what brand and what type (if the thickness is perhaps the most important)?

Thank you. God bless you. Revelation 21:4

I would like to contact https://www.ifixit.com/

If anyone should know...

Tags: Mac

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