Question What thermal paste to use?

[hamletrules]

Hello I recently had my cpu repasted with arctic silver 5 and had worse thermals by about 10 degrees c on my acer nitro 5 an 515 55 with an i7-10750h. I have decided to have it repasted which is free of charge, I was wondering what the best thermal paste to use for laptops is, which will result in better thermals, and will not have the pump out issue and have a combination of good duration and temps. I have heard that thermal grizzly kyronaut can have a pump out issue on laptops wondering if this is true or not?

 

[USAFRet]

10C difference was not due to crappy paste. Especially Arctic Silver.
https://www.tomshardware.com/best-picks/best-thermal-paste

 

[hamletrules]

10C difference was not due to crappy paste. Especially Arctic Silver.
https://www.tomshardware.com/best-picks/best-thermal-paste

I may be wrong about this but I have heard from independent sources that arctic silver 5 did not improve there thermals that much the only reason I used it is it is the only one that the pc shop that I went to used, however they have agreed to repaste my cpu free of charge with a paste of my choice, do you recon that arctic mx 5 is a good paste, I have heard it is especially good for laptops let me know your opinion.

 

[USAFRet]

I may be wrong about this but I have heard from independent sources that arctic silver 5 did not improve there thermals that much the only reason I used it is it is the only one that the pc shop that I went to used, however they have agreed to repaste my cpu free of charge with a paste of my choice, do you recon that arctic mx 5 is a good paste, I have heard it is especially good for laptops let me know your opinion.

"did not improve" is different than "10C worse".

Done correctly, there is little actual difference between all the major brands.
Look at the graphs in the link I posted.

 

[hotaru.hino]

The main issue I'm seeing is this is a laptop and likely using direct die cooling, which for some thermal pastes can be an issue. For example, Thermal Grizzly Kryonaut degrades if exposed to 70C for extended periods of time. Noctua NT-H1 is also notorious for "pumping out" when used on direct die applications. Apparently people also get the same issues with Arctic MX-4, though some people are fine with it.

Use a thicker paste for this. Thermal Grizzly's Hydronaut typically gets recommended for direct die applications.

 

[hamletrules]

The main issue I'm seeing is this is a laptop and likely using direct die cooling, which for some thermal pastes can be an issue. For example, Thermal Grizzly Kryonaut degrades if exposed to 70C for extended periods of time. Noctua NT-H1 is also notorious for "pumping out" when used on direct die applications. Apparently people also get the same issues with Arctic MX-4, though some people are fine with it.

Use a thicker paste for this. Thermal Grizzly's Hydronaut typically gets recommended for direct die applications.

Thank you so much for your response, 2 further questions, does this mean, that if I use Thermal Grizzly's Hydronaut I can operate my laptop at temperatures over 85 degrees c? Although not ideal and not have a pump out issue, also would 1 gram be enough for a cpu and a gpu as I assume when the heatsink is taken off both need to be repasted. Also would this be a good option https://www.pccasegear.com/products/35852/thermal-grizzly-hydronaut-thermal-grease-1g