The white paste is a called a gaping thermal paste. It is not as good as thermal pads in the ability to transfer heat to the heat sink. To save time during manufacturing Apple uses this goo
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The white paste is a called a '''''gaping thermal paste'''''. It is not as good as thermal pads in the ability to transfer heat to the heat sink. To save time during manufacturing Apple uses this goo.
A CPU or GPU thermal paste is designed to be compressed as it’s designed to fill the microscopic imperfections within the heat sink and the chip its self (or metal can covering the CPU chip).
If you try using a CPU/CPU thermal paste it just won’t carry the heat across effectively and you will damage your VRAM chips.
What I do is dry fit the heatsink onto GPU and then I use a feeler gage to measure the distance between the VRAM chip and the heat sink so I properly size the needed thermal pad (you can also just use some strips of card stock instead of a feeler gage). You want a snug fit not loose! Here’s the material I use.
* [https://www.newegg.com/p/2MB-001M-00001?Item=9SIABG36E71629&cm_re=thermal_pads_gpu-_-2MB-001M-00001&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=11552995&PID=8269773&SID=&cjevent=a5fa53b5a42611e981c7018a0a24060f|100mmx100mmx0.5mm GPU Northbridge IC LED Chipset Heatsink Cooling Conductive Silicone Thermal Pad,100x100x0.5mm w/ 3.2W/M-K]
* [https://www.newegg.com/p/2MB-001M-00002?Item=9SIACJF5MP7814&cm_re=thermal_pads_gpu-_-9SIACJF5MP7814&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=11552995&PID=8269773&SID=&cjevent=aec498cea42611e980ce01980a24060e|100mmx100mmx1.0mm GPU Northbridge IC LED Chipset Heatsink Cooling Conductive Silicone Thermal Pad,100x100x1.0mm w/ 3.2W/M-K]
* [https://www.newegg.com/p/2MB-001M-00003?Item=9SIACJF5MP7820&cm_re=thermal_pads_gpu-_-9SIACJF5MP7820&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=11552995&PID=8269773&SID=&cjevent=b8a6feb8a42611e983be01810a240612|100mmx100mmx1.5mm GPU Northbridge IC LED Chipset Heatsink Cooling Conductive Silicone Thermal Pad,100x100x1.5mm w/ 3.2W/M-K]
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I’ve also been playing with this material as its a bit better but a bit more expensive: [https://www.innovationcooling.com/products/3m-5519-thermal-interface-pad/|3M 5519 Thermal Interface Pad]
Clean the surfaces fully and cut the pad material just a hair larger than the VRAM chip as over time it will shrink. As far as the GPU chip make sure you don’t exceed the chips surface as some thermal pastes are conductive enough to interfere with the signals Don’t use liquid metal! Frankly I find either Thermal Grizzly's Kryonaut thermal paste or ArcticSilver5 paste is just fine. I mostly use Kryonaut these days as its a bit better.
Here’s a bit more on how one measures thermal conductivity [https://www.beal.co.nz/thermal-measurement/|Understanding Thermal Conductivity And Thermal Resistance]
The white paste is a called a gaping thermal paste. It is not as good as thermal pads in the ability to transfer heat to the heat sink. To save time during manufacturing Apple uses this goo
A CPU or GPU thermal paste is designed to be compressed as it’s designed to fill the microscopic imperfections within the heat sink and the chip its self (or metal can covering the CPU chip).
If you try using a CPU/CPU thermal paste it just won’t carry the heat across effectively and you will damage your VRAM chips.
What I do is dry fit the heatsink onto GPU and then I use a feeler gage to measure the distance between the VRAM chip and the heat sink so I properly size the needed thermal pad (you can also just use some strips of card stock instead of a feeler gage). You want a snug fit not loose! Here’s the material I use.
* [https://www.newegg.com/p/2MB-001M-00001?Item=9SIABG36E71629&cm_re=thermal_pads_gpu-_-2MB-001M-00001&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=11552995&PID=8269773&SID=&cjevent=a5fa53b5a42611e981c7018a0a24060f|100mmx100mmx0.5mm GPU Northbridge IC LED Chipset Heatsink Cooling Conductive Silicone Thermal Pad,100x100x0.5mm w/ 3.2W/M-K]
* [https://www.newegg.com/p/2MB-001M-00002?Item=9SIACJF5MP7814&cm_re=thermal_pads_gpu-_-9SIACJF5MP7814&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=11552995&PID=8269773&SID=&cjevent=aec498cea42611e980ce01980a24060e|100mmx100mmx1.0mm GPU Northbridge IC LED Chipset Heatsink Cooling Conductive Silicone Thermal Pad,100x100x1.0mm w/ 3.2W/M-K]
* [https://www.newegg.com/p/2MB-001M-00003?Item=9SIACJF5MP7820&cm_re=thermal_pads_gpu-_-9SIACJF5MP7820&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=11552995&PID=8269773&SID=&cjevent=b8a6feb8a42611e983be01810a240612|100mmx100mmx1.5mm GPU Northbridge IC LED Chipset Heatsink Cooling Conductive Silicone Thermal Pad,100x100x1.5mm w/ 3.2W/M-K]
I’ve also been playing with this material as its a bit better but a bit more expensive: [https://www.innovationcooling.com/products/3m-5519-thermal-interface-pad/|3M 5519 Thermal Interface Pad]
Clean the surfaces fully and cut the pad material just a hair larger than the VRAM chip as over time it will shrink. As far as the GPU chip make sure you don’t exceed the chips surface as some thermal pastes are conductive enough to interfere with the signals Don’t use liquid metal! Frankly I find either Thermal Grizzly's Kryonaut thermal paste or ArcticSilver5 paste is just fine. I mostly use Kryonaut these days as its a bit better.
Here’s a bit more on how one measures thermal conductivity [https://www.beal.co.nz/thermal-measurement/|Understanding Thermal Conductivity And Thermal Resistance]