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Degraded performance grounds for warranty?

post #1 of 10
Thread Starter 
I bought my h100 almost 5 years ago, a few months left. Been cooling my 3930k with it @ 1.35v, at first I remember the temperatures only got as high as ~75C during intel burn test. Also, right from the start, the pump had this annoying rattle, I solved it by running its power though a heavy duty diode, dropping its voltage to ~11v.

Over the years its performance has degraded. As of 1 week ago, hitting the thermal throttle limit at 91C wasn't an uncommon sight while rendering or such.

I clean out dust regularly so that's not an issue, I tried improving its performance by swapping out the thermal paste a few days ago. The original paste was bone dry and rock solid, took me a good half an hour of scrubbing with isopropyl alcohol + a toothbrush to get it off. Anyways, that just made it worse, at least temporarily.

I'm not sure why but now the pump doesn't appear to be working while powered through the diode anymore. The lights are on and it reports its RPM as ~2000 but it idles at 80C which is totally not cool. Removing the diode, the rattle came back, the RPM rose to ~2200 but at least it got back to pre-paste swap levels of heat again, apparently being dry didn't affect the old pastes heat conductivity.

Essentially I think the pump is dying, it probably wont die completely any time soon but at this point, I'm pretty much better off with the intel stock cooler.

Do you guys think I could send it to Corsair for warranty service? Would it be reasonable?
post #2 of 10
Some people have reported pump issues with the Corsair (really it happens with all of them), and in your case it looks like it's giving up the ghost, so yes it is grounds for an RMA.
 
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post #3 of 10
It's probably low on water. I hear those AIOs start to get low after a few years, no matter what you do, even though they're technically sealed.


Either way, yeah, I'd send it in.
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post #4 of 10
RMA time for sure.

Some users have noted corrosion of the coldplate after extended use because of the copper aluminum construction of these all in one units.

I sure hope my H80i lasts for a while longer.
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post #5 of 10
Pretty obvious that the diode is the problem. It works fine when you run it with normal power, other than the noise.
Edited by RX7-2nr - 4/9/17 at 3:03pm
post #6 of 10
It may not be the pump, could be corrosion as stated above. The corrosion could prevent thermal transfer. Also could be low water as stated above.

Either case, I would stop using it and replace it, and send out for rma while you still can.
post #7 of 10
Thread Starter 
Had a shocking revelation just 20 mins ago. Apparently the cooler is just fine, it was the thermal compound all along!

I didn't give it much thought when I just picked the first tube out of my stuff box, it was the "revoltec thermal grease", turns out it is exceptionally bad.

I changed it for the prolimatech pk-2 this time and the temperatures are as good as they were 5 years ago. 30C difference is kinda insane, I never would have thought thermal compounds had such a difference.

I'm still not sure why the pump won't work with the diode anymore, working on that but meanwhile, omg I've used that revoltec junk in so many places.
post #8 of 10
Quote:
Originally Posted by pickleburglar View Post

Had a shocking revelation just 20 mins ago. Apparently the cooler is just fine, it was the thermal compound all along!

I didn't give it much thought when I just picked the first tube out of my stuff box, it was the "revoltec thermal grease", turns out it is exceptionally bad.

I changed it for the prolimatech pk-2 this time and the temperatures are as good as they were 5 years ago. 30C difference is kinda insane, I never would have thought thermal compounds had such a difference.

I'm still not sure why the pump won't work with the diode anymore, working on that but meanwhile, omg I've used that revoltec junk in so many places.


30C?

It has to be something else on top of that. Even dried cream cheese or toothpaste only give you a 10C drop over good compound, and surely it can't be worse than that tongue.gif

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Bruce
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post #9 of 10
Thread Starter 
I don't know what else it could be, mounting the h100 on LGA2011 is pretty idiot proof, no clamps just screws right into the motherboard. Meanwhile, I'm also devising a business plan to resell the revoltec grease as house insulation, if my calculations are correct, it would take merely 10g to cover all the walls in an ultra thin layer for unprecedented heat conservation!
Edited by pickleburglar - 4/10/17 at 8:20am
post #10 of 10
Quote:
Originally Posted by pickleburglar View Post

I don't know what else it could be, mounting the h100 on LGA2011 is pretty idiot proof, no clamps just screws right into the motherboard. Meanwhile, I'm also devising a business plan to resell the revoltec grease as house insulation, if my calculations are correct, it would take merely 10g to cover all the walls in an ultra thin layer for unprecedented heat conservation!
Maybe it is the pump / coolant flow blocked by garbage in tthe system .. and moving it around knocked it loose / repositioned pump so it works .. but probably not for long. RMA the CLC. 5 years is a long life, no reason to push your luck and have it fail a week after warranty ends.
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