CPU idle temp 80C after re-applying therm paste

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guffyluffybro

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Feb 12, 2017
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I've recently had cpu problems so i re-applied thermal paste as the core temperatures were quite high. After doing so, the reading was still idle at 80C and after doing it a second time it was the same. I know i have a water cooling system but in not sure which one. My fan is working and at 100% but i'm getting no change.

I'm using an intel i5-4670K

1. If you have a method of finding my cooling system, that would be great.
2. If you know how to solve the prblem, that would be better

Thx for any future help
 
Solution
mcconkeymike
I mean any kind of cooler, whether it be a heatsink/fan (like a stock Intel) or another liquid cooler or whatever. Most likely it is a pump failure and I don't think that AIO (all in one) CPU coolers have replaceable pumps, so you are going to have to replace the entire cooler/pump/radiator combo. From there you'll want to decide if you want to go with another AIO or a heatsink/fan option. The heatsink/fan option is usually cheaper and depending on the unit can do almost as good a job as water, but they are typically less pretty. Once you make your decision, then we can assist you on what to go with.
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mcconkeymike

mcconkeymike

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I'm guessing that since you don't know what the cooler is that you bought a prebuilt. The first question is how old is the unit? Second, do you happen to have another cooler lying around that you can swap to make sure the problem is nothing but the cooler? Most likely the cooler's pump went out or that the liquid in the cooler has evaporated. You'll most likely need to replace it.
 
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mcconkeymike

mcconkeymike

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I would hope that it would idle lower than that, my Hyper 212 EVO has my OC i7-7700k idling at 29-31C. Granted she probably runs a little warm at load (~75C) but I've already ordered new fans for it, should be here this week.
 
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guffyluffybro

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it says its a corsair but other than that i have no idea
 
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guffyluffybro

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I dont have a spare cooler lying around and by replace it do you mean the liquid, the pump or the whole thing
 
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mcconkeymike

mcconkeymike

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I mean any kind of cooler, whether it be a heatsink/fan (like a stock Intel) or another liquid cooler or whatever. Most likely it is a pump failure and I don't think that AIO (all in one) CPU coolers have replaceable pumps, so you are going to have to replace the entire cooler/pump/radiator combo. From there you'll want to decide if you want to go with another AIO or a heatsink/fan option. The heatsink/fan option is usually cheaper and depending on the unit can do almost as good a job as water, but they are typically less pretty. Once you make your decision, then we can assist you on what to go with.
 
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Solution
photonboy

photonboy

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Jun 20, 2006
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I agree that it's likely pump failure because:

a) too hot
b) not liquid since you'd know if it leaked out
c) not fan issue since it's spinning

That leaves pump failure so the liquid is not circulating properly.

SOLUTION?
I would suggest a good AIR cooler instead unless you have a Warranty on the liquid cooler. Apparently many have about a 5-year lifespan. The pump can fail, the radiator can crack, and even the tubes get permeated by liquid and will cause fluid levels to drop.

It doesn't sound like you BUILT it out of separate parts but have an AIO (All In One) prebuilt liquid cooling loop. They aren't home repairable AFAIK.

So again, I'd look into something like:
$65 http://pcpartpicker.com/product/DMjG3C/noctua-cpu-cooler-nhu14s
$60 http://pcpartpicker.com/product/YwGkcf/be-quiet-cpu-cooler-bk018
$50 http://pcpartpicker.com/product/jK8H99/cryorig-cpu-cooler-h5universal
$35 http://pcpartpicker.com/product/93Crxr/cryorig-cpu-cooler-h7

The Noctua NH-U14S can handle a light overclock on the i5-4670K to roughly 4.5GHz (depending on case cooling and ambient room temperature).

The Cryorig H7 is cheap but won't handle as high an overclock.

The Be Quiet DR 3 is a hassle to install but is quieter than the Cryorig coolers I listed (with proper fan setup done).

I'd probably go with the Be Quiet listed.
 
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photonboy

photonboy

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Update:
Make sure case, memory, and top PCIe clearance/compatibility is not an issue.

The Noctua NH-U14S is relatively small but still a good cooler so it's worth considering.

Just FYI, but the VOLTAGE is what raises temperature most. With my i7-3770K I got to 4.3GHz with all four cores at about 65degC whilst using Handbrake (Noctua NH-D14 with custom fan profile). When I aimed for just 4.5GHz I had to raise the voltage enough that the temperature jumped to 80degC so I went back to default voltage and 4.3GHz (I just manually changed the MULTIPLIER values to maximum without instability). Your situation will vary.

Also, there is rapidly diminishing returns. Very few games have noticeable benefits beyond 4.2GHz with that CPU. For tasks that aren't real-time it's proportional to the overclock so 200MHz or so is less than a 5% time savings.
 
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