Thermal Paste Thread for QB648/288/COB Building-Post Temps Here

Federucci

Well-Known Member
Hello everyone,

This girl has been doing (far too much) research into thermal pastes and wanted to share what I thought was interesting. If you are about pushing the boards to their limits, then I believe that thermal paste and active cooling is a no-brainer. Anyway, here's a chart for "medium pressure air cooled GPUs". I thought the concept would be roughly the same for QB boards or COB building, as they are probably a moderate pressure mount to the heatsinks. TG Hydronaut is one of the least viscous pastes and the performance is very high. I think that a 10-15mil layer would be plenty to bridge any air gaps between the board and heat sink. I was going to use Prolimatech PK-3, but it is more like a putty than a paste, so getting an even, thin layer on everything seems harder. If you want to run QBs hard, you should definitely consider thermal management of both unit and environment. Anyway, check out this list if you want to dweeb out on TIMs.


If you have before and after operating temp measurements, please feel free to post them, as well as your favorite pastes or cooling systems here.
 

JSB99

Well-Known Member
Hello everyone,

This girl has been doing (far too much) research into thermal pastes and wanted to share what I thought was interesting. If you are about pushing the boards to their limits, then I believe that thermal paste and active cooling is a no-brainer. Anyway, here's a chart for "medium pressure air cooled GPUs". I thought the concept would be roughly the same for QB boards or COB building, as they are probably a moderate pressure mount to the heatsinks. TG Hydronaut is one of the least viscous pastes and the performance is very high. I think that a 10-15mil layer would be plenty to bridge any air gaps between the board and heat sink. I was going to use Prolimatech PK-3, but it is more like a putty than a paste, so getting an even, thin layer on everything seems harder. If you want to run QBs hard, you should definitely consider thermal management of both unit and environment. Anyway, check out this list if you want to dweeb out on TIMs.


If you have before and after operating temp measurements, please feel free to post them, as well as your favorite pastes or cooling systems here.
Just like CPUs. If you don't have thermal grease filling in all the microscopic ridges and valleys, the surface area doesn't transfer heat as well.
 
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