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MCP355 died, possible causes? - Page 3

post #21 of 48
Quote:
Originally Posted by Klue22 View Post



Classic overheating then burnage. For ex. from Martin's:
Quote:
Links to DDC’s melting down

I thought the following is a good example of the extreme heat causing problems for some folks:

http://forum.hardware.fr/hfr/OverclockingCoolingModding/Water-Xtreme-Cooling/pompe-laing-prend-sujet_277053_1.htm

Go to said website and you find:




Looks just like yours doesn't it?


Now, compare that to the hot spots on Martin's heat scoping:





I'm sure tehre are those who think the overheated assumption is totally wrong still lol.
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post #22 of 48
DDC's overheat all the time but I don't think that was the case here. He was pushing through 4 CPU blocks. That is some serious restriction so the pump should have been running rather cool. I think he just got some bad luck.
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post #23 of 48
See, if it was simple excess heat damage why isn't it uniform.

And lots of electric damage to PCB's from component failure will lead to the same thing, and looks exactly the same.
Heat no doubt plays a role in some cases. To blanket all DDC failure as user caused heat damage is just silly. Especially when they are being used in a low heat producing config.








Thats where the evil black smoke and smell come from.
Edited by Jakusonfire - 1/11/15 at 3:47pm
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post #24 of 48
Quote:
Originally Posted by lowfat View Post

DDC's overheat all the time but I don't think that was the case here. He was pushing through 4 CPU blocks. That is some serious restriction so the pump should have been running rather cool. I think he just got some bad luck.

He had it mounted flush to the floor.
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post #25 of 48
Quote:
Originally Posted by Raul-7 View Post

That seems a lot for one pump; why not use 2?

I was thinking the same thing. Im adding a rad and gpu block so I will have a total of 3 blocks and two rads and Im getting the mcp50 just to be safe.
post #26 of 48
Quote:
Originally Posted by tsm106 View Post

He had it mounted flush to the floor.

Yeah but so what. The base is plastic. Its not like that little bit of extra airflow on the bottom is gonna massively improve the way heat is drawn out. Its still sitting in an insulating plastic shell.

It would be foolish to just totally deny there is any heat problem at all, and that they never die from that, and I wouldn't run a DDC in a high flow (that's 2GPM plus) config without a heatsink. It has grown into a folk lore of sorts that the pumps are fine and its just the users fault for doing it wrong though, and that just doesn't stand up to all the facts. To me at least anyway.
Edited by Jakusonfire - 1/11/15 at 3:59pm
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post #27 of 48
Quote:
Originally Posted by Jakusonfire View Post

Yeah but so what. The base is plastic. Its not like that little bit of extra airflow on the bottom is gonna massively improve the way heat is drawn out. Its still sitting in an insulating plastic shell.

It would be foolish to just totally deny there is any heat problem at all, and that they never die from that, and I wouldn't run a DDC in a high flow (that's 2GPM plus) config without a heatsink. It has grown into a folk lore of sorts that the pumps are fine and its just the users fault for doing it wrong though, and that just doesn't stand up to all the facts. To me at least anyway.

after this, please dont post anymore about ddc pumps until you realize they need airflow under them to cool them. you have paid no attention to what anyone has ever said about the bases of the pumps needing to be cooled and not to mount the damned things without airflow UNDER them because they will overheat.
he had it mounted onto the floor of his case and it overheated because the base had no airflow to cool it.
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post #28 of 48
Quote:
Originally Posted by pc-illiterate View Post

after this, please dont post anymore about ddc pumps until you realize they need airflow under them to cool them. you have paid no attention to what anyone has ever said about the bases of the pumps needing to be cooled and not to mount the damned things without airflow UNDER them because they will overheat.
he had it mounted onto the floor of his case and it overheated because the base had no airflow to cool it.

Lol ... yeah OK. I guess they put those little feet on them as a practical joke. So, normal flow rates and just covering the bottom will overheat the pump. Wonder how they get 95% reliability and 50,000 hr life without ever specifying that.








This one wasn't covered

Edited by Jakusonfire - 1/11/15 at 9:38pm
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post #29 of 48
because it isnt designed to be in a damned pc case. its an aquarium/pond/solar pump the same as a d5.
i used to think you were pretty smart about this stuff. youve shown in this thread i was wrong.
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post #30 of 48
The 35_ pumps are extremely prone to overheating, especially when the bottom is covered by an insulator (like wood!)

Case Closed.
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