i7-4790K (not OC) overheating with H80i installed

swhalen32001 · Sep 24, 2014

I recently built a new computer with ASUS Maximus Hero VII, i7-4790K, 16 Crucible RAM and an H80i installed with push/pull on back panel.

I believe I'm having overheating problems but not sure. Temps running around 36-40C with minimal load but occasionally moves up to 65C. Ran an sfc scan and temps ran to 65-68 C with brief spikes to 80-83C The temps are from Corsair Link and HWMonitor). Computer and shut down all on its own twice (but not in about 5 days now) - I suspect overheating.

The back exhaust (from H80i radiator) is cool. Took side panel off and radiator and water tubes are cool to the touch.

Three questions: 1) is this running too hot? 2) Shouldn't the radiator / water tubes / exhaust be warm? 3) Wouldn't the system run hotter than this if the H80i wasn't working at all?

Any thoughts / suggestions would be greatly appreciated.

gogi · Sep 24, 2014

Did you put any thermal paste before applying the H80i?

Farapon · Sep 24, 2014

Post the voltage you're running that CPU.

swhalen32001 · Sep 24, 2014

I used the pre-applied thermal paste that came with the H
MoBo VCore shows 1.856 V
CPU shows: IA 1.357 V System Agent Offset 0.102 V VID varies but high at1.323 V
Temps reached 95C at one point.

gogi · Sep 24, 2014

try taking it off and re-mounting it. Might fix whatever voodoo is happening to it

swhalen32001 · Sep 24, 2014

gogi :

So you do think its running hot? Do you know if radiator should be warm to the touch?

Thanks for the suggestion. Will get some paste and try that.

swhalen32001 · Sep 24, 2014

Farapon :

Thanks... See Screen Shot -- https://lh6.googleusercontent.com/-e4pFd3wf-M8/VCNoa3JdUBI/AAAAAAAAAWc/MbzNLQcBvgA/w439-h629-no/ScreenTemps.jpg

Farapon · Sep 25, 2014

swhalen32001 :

Did you try to set it up to 1.18 to 1.3 volts? I saw that that's the voltage frequently used and gets good temps

ko888 · Sep 25, 2014

What is your motherboard's BIOS version?

You need to be using at least Version 0609 or later to properly support the Devil's Canyon CPU (i.e. your i7-4790K). If the BIOS version is older then you'll see the 1.8 Volt Vcore. Normally the maximum you should see with default clocks and voltages is 1.308V with the proper BIOS support.

swhalen32001 · Sep 25, 2014

Farapon :

swhalen32001 :

Did you try to set it up to 1.18 to 1.3 volts? I saw that that's the voltage frequently used and gets good temps

swhalen32001 · Sep 25, 2014

I have not. I'm new to this so I'll give that a try as well. Also waiting for new thermal paste to show up so I can re-mount the cooler head. I'll mess with this tonight. Thank you!

swhalen32001 · Sep 25, 2014

Farapon :

swhalen32001 :

Did you try to set it up to 1.18 to 1.3 volts? I saw that that's the voltage frequently used and gets good temps

swhalen32001 · Sep 25, 2014

I have not. I'm new to this so I'll take that suggestion and give it a try. Also waiting for new thermal paste to show up so I can re-mount the cooler head. I'll mess with this tonight. Thank you!

swhalen32001 · Sep 25, 2014

ko888 :

I had BIOS 0508 and updated to 1104. Temps don't seem to have changed much with the BIOS update. Perhaps even spiking higher than before. Being new to this I've left the BIOS default settings as is.

swhalen32001 · Sep 26, 2014

Last post on topic and I thank you folks for giving me ideas. Topic might help others at some point.

While running multiple apps temps spiked to 85C regularly and maxed at 95C at some point. Scary for my first build. Something wasn't right.

Entered BIOS and noticed that 4 core ratios were set to 45 - CPU running OC at 4.5 GHz. POINT - I never changed any BIOS settings to this point. Apparently the motherboard was set for overclocking on initial startup. Maybe I should have expected that with this type OC's dream board.... but I didn't.

Changed ratios to 40. Loaded and ran Intel's Processor Diagnostic Tool including stress test (and monitored temps using Corsair Link and Real Temp). Temps maxed out at 73C but only briefly. Intel Diagnostics showed PASS all around and all looks good. Now I can go about OC this thing a step at a time. Oh, I still plan to reseat the H80i with new thermal paste this weekend.

Thanks again.

sora · Sep 26, 2014

Glad to see that your problem has been fixed. Did you end up remounting the cooler head?

swhalen32001 · Sep 27, 2014

sora :

Soon. No Thermal paste anywhere in town. Need to wait until it can be delivered.

nostall · Sep 27, 2014

swhalen32001 :

Corsair uses Shin Etsu thermal paste, some of the best out there. Before taking the cooling block off and doing all the work of cleaning it up and reseating it, make certain it is tightened down onto the CPU properly and firm enough. A brief spike of 75 is a little high but not outrageous if the CPU was under full load at the time.
UPDATE: If you DO remount the cooler, be certain to use a premium Thermal Compound: I have been using Arctic Silver 5 and it is very good, but here is a link that lists some other excellent componds.
http://www.maximumpc.com/article/features/geek_tested_17_thermal_pastes_face

swhalen32001 · Sep 27, 2014

nostall :

Thanks for the info. Was planning on using Arctic MX-4. Head still spinning from research on what TIM to use. Best I can figure is AS5 and MX-4 both have large, loyal followings. Probably can't go wrong with either. Thanks, I hadn't seen that page in my research.

swhalen32001 · Sep 27, 2014

nostall :

Thanks for the info. Was planning on using Arctic MX-4. Head still spinning from research on what TIM to use. Best I can figure is AS5 and MX-4 both have large, loyal followings. Probably can't go wrong with either. Thanks, I hadn't seen that page in my research.

Darthutos · Sep 27, 2014

Put some washer on the backplate screws. This is to make sure that the heat sink is secure on cpu and actually making contact with the IHS.

I had the h80i and I put it on without extra washers and when I did a test fit the TIM didn't even get on the CPU.

i7-4790K (not OC) overheating with H80i installed

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