What kind of heatpipes are usually used in air coolers? - Overclock.net - An Overclocking Community
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What kind of heatpipes are usually used in air coolers?

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post #1 of 26 (permalink) Old 01-30-2020, 01:47 PM - Thread Starter
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What kind of heatpipes are usually used in air coolers?

Sintered, grooved, meshed??
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post #2 of 26 (permalink) Old 05-06-2020, 10:06 AM
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Sintered.
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post #3 of 26 (permalink) Old 05-06-2020, 06:17 PM
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Quote: Originally Posted by carmack View Post
Sintered.

My GAWD, is that a Thermalright carcass we are viewing here .
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post #4 of 26 (permalink) Old 05-07-2020, 05:01 AM
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Quote: Originally Posted by Elrick View Post
Quote: Originally Posted by carmack View Post
Sintered.

My GAWD, is that a Thermalright carcass we are viewing here [IMG class=inlineimg]/forum/images/smilies/poke.gif[/IMG] .
RIP

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post #5 of 26 (permalink) Old 05-07-2020, 06:25 AM
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It can still cool. I deliberately done this to determine how much heat can it remove with only one heatpipe.
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post #6 of 26 (permalink) Old 05-07-2020, 05:09 PM
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What were your results?

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post #7 of 26 (permalink) Old 05-08-2020, 12:16 AM
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Quote: Originally Posted by carmack View Post
That's not a TRUE anymore.


Now it's a FALSE



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post #8 of 26 (permalink) Old 05-08-2020, 01:41 AM
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The amount of heat a heatpipe can transfer depends on diameter, length, position and die size. In tower cooler heatpipes go from both sides of the base; it s basically double. These are the resaults on RX 580 (232 mm2) in vertical position; it can cool close to 100 W. If i raise power just a little bit, it couldn t stabilize the temperature no more. I tried it on i5 4590 and the resaults were similar; it managed about 100 W in vertical position (i dont have pictures).

Then, there is scythe ashura on rx vega 64. In vertical position it cools close to 400 W. Upside down, however, it couldn t stabilize the temperature (I aborted the test).
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post #9 of 26 (permalink) Old 05-08-2020, 05:04 AM
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Quote: Originally Posted by carmack View Post
The amount of heat a heatpipe can transfer depends on diameter, length, position and die size. In tower cooler heatpipes go from both sides of the base; it s basically double. These are the resaults on RX 580 (232 mm2) in vertical position; it can cool close to 100 W. If i raise power just a little bit, it couldn t stabilize the temperature no more. I tried it on i5 4590 and the resaults were similar; it managed about 100 W in vertical position (i dont have pictures).

Then, there is scythe ashura on rx vega 64. In vertical position it cools close to 400 W. Upside down, however, it couldn t stabilize the temperature (I aborted the test).

This is the first time I hear about this upside-down problem. Does it happen with all heatpipes?

I had the idea to get an Noctua NH-D9L to try to mount it on a graphics card. The NH-D9L is a very small dual-tower cooler that's just 110mm high so it when it's mounted upside-down on a graphics card it would fit in any ATX case.

This upside-down problem means that my plan is bad and can't work. Did I understand this right?
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post #10 of 26 (permalink) Old 05-08-2020, 05:45 AM
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The problem is that it must cool 400 W upside down. It will cool 200 W upside down no problem. Noctua NH-D9L has only 4x6 heatpipes, but they are shorter ( in comparison to Scythe Ashura). Shorter heatpipes can transfer more heat, so they are around the same (NH-D9L and scythe ashura) in heat transfer capability.

I also tried small scythe byakko (horizontal) on Rx Vega 64 and it managed to cool 350 W. Bykko has only 3x6 but they are short.

To cool very high TDPs on GPUs tower cooler has to be in horizontal or vertical position (best position). The same is true for CPU s but they generly have low TDP s (100-200 W), so it will cool about the same in all positions..
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