Stock GPU and thermal paste

[zoran]

What kind of thermal paste would you use to connect the 2010 iMac's stock gpu with the heat sink? There are thermal pastes with silicon or copper etc etc... what would be the best and why?

 

[Mr.Fox]

What kind of thermal paste would you use to connect the 2010 iMac's stock gpu with the heat sink? There are thermal pastes with silicon or copper etc etc... what would be the best and why?

I don't have an iMac. I have an RTX4090 graphics card. Thermal paste, that's crap. I have been using only liquid metal on all custom workstations for many years. Why? Very high thermal conductivity. Much higher than thermal paste. If fear and trembling in the knees to use liquid metal, I recommend the proven thermal paste from Noctua NT-H2. You can read about additives in thermal pastes yourself, you are not a small child.