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A mid 2010 iMac comes with a 2pipe heat sink for its GPU.
Im thinking of replacing it with a 3pipe heat sink, so that the GPU cools better, but i was thinking...
1. will it fit?
2. will it actually create more cooling?
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I don’t think that will offer more cooling, the evacuation of the heat is more a factor of the fan than the cooler itself.
The heatsink collects the heat from the chip and then transfers it to the heat pipes which are filled with a coolant which either evaporates or migrates the heat to the fin block where the coolant condenses or directly sheds the heat via a fan blowing across the fins of the second block. The gating factor is the fans ability to evacuate the heat. Which is why many people use applications which ramp up the fans RPM’s. But there is a balance here you don’t want to run the fans straight out between the noise they also do wear out.
You also don’t really have any choices here as the cooler assembly is custom to Apple and the different series are unique. I would make sure the thermal paste has been refreshed and the dust buildup has been cleaned out of the fins and fan blades as well as the logic boards surfaces.
I would recommend getting a good thermal monitoring app like TG Pro first seeing where you are thermally, and then clean things up. Leverage the fan control features so when the system hits a thermal threshold the fans speed up.
Lastly, be careful you don’t push this system too far as it’s not really designed to support heavy graphics that many apps and games use today. Even the 2011 system isn’t powerful enough for heavy photo editing or video redering.
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"I don’t think that will offer more cooling, the evacuation of the heat is more a factor of the fan than the cooler itself self."
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Thanks Dan, but you want to say that between the 2 and 3 pipe heatsinks, there will be no GPU cooling difference?
@genik - Only the speed on moving the heat away. Think it like a car with a four cylinder Vs six cylinder. Jumping from the stop line the six cylinder will win out. But both can’t exceed the speed limit of the road (here the ability of the fan to move the heat out).
So while Apple did offer in the 27” systems two coolers the GPU logic boards of these two series is different. If cooling is the issue then the quicker you can evacuate the heat out of the system all the better via the fan.
Is it safe to say that faster heat evacuation does help to keep the chip alive & working for a longer period of time when compared to a chip that doesn't evacuate the heat as fast?
@genik - Not significantly, if you had both in your hands and measured the tube diameters then add them up the total diameter of heat conveyance is not that much different. Remember, once the heat sink is at saturation with heat the limit is more than the tubes and fan fin area can carry that quickly.
What type of Apps are you trying to run here?
@danj Adobe CC apps
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Hey there, which heat sink are you looking at?
crwdns2934271:0crwdnd2934271:0 Jacob Mehnert crwdne2934271:0
@jmehnert this is the one https://ibb.co/BgJTsYs
crwdns2934271:0crwdnd2934271:0 genik crwdne2934271:0