Intel I7 5820K overclocked running very hot

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WhitePossum

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Dec 10, 2015
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Hi guys,
First of all i'm not really that knowledgeable about PC's in general so I don't know what is good temperatures. My brother helped me build this PC since he has built around 4 before;
Intel I7 5820K overclocked to 4400MHz
Corsair Obsidian 450D tower case
Corsair H80i GT Hydro cooler
GTX970 Graphics card
(4 fans mounted on the case + the watercooler)

I bought everything from Scan, so the watercooler was already mounted for me.

When I turn my PC on and it gets up to temperature, on idle my cores are running at 65 degrees C which seems really hot.
I make videos for youtube so I often start editing and rendering with this PC and at that time my cores are around 78-85 degrees C...and about 4 times now i've had blue screens crashing my PC with the 4400MHZ overclock.

My room is large, the case has plenty of airflow and fans. I have the bedroom window open and my door open, yet it's still running this hot.

We tried down clocking my PC to 4200MHZ, temperatures at this clock are as follows;
On idle after start up 55-63 degrees c for my cores
When editing / rendering 68-80 degrees C (The cores seem to vary more on this clock when it comes to temp) it's just the one core that goes to the 80 degrees temp. I haven't had any blue screens on this clock yet, but i've literally just started using it so will have to test it for a few days.

Just so you know, I'm rendering for a few hours a day 4 days a week. I'm worried about these temperatures causing damage to my machine. I have no idea if these temperatures are good or if something is wrong with the cooling of my machine.

If anyone could help and give some advice, I would greatly appreciate it. Remember i'm not PC savy, but if you need any more information I will try my best to provide it.
Thanks
 
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We just opened up my PC and checked, the watercooling is mounted in the same spot that corsair recommend, the fans are all facing the correct way. How do we know if it's working properly other than that? All the fans come on and the light on the watercooler.

I wrote down some voltages, hopefully these are the ones you need.
CPU VRIN External Overid 1.800V Auto
CPU Vcore 1.299V 1.300V
CPU Ring Voltage 1.050V Auto
CPU System Agent Voltage +0.000V Auto
CPU VCCIO 1.050V Auto

and yes it's always running at 4.4MHZ
 
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I've just ordered some thermal paste, thermal paste remover and anti static wrist strap. I will try using new thermal paste and see if that fixes it.
I bought my PC bundle from Scan and they mounted the watercooler to the CPU themselves, so maybe they didn't apply the paste properly or used cheap paste?
I will try that and report back in a few days time.

If anyone has any other suggestions or help in the meantime, it's greatly appreciated. Thanks
 
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Hi guys, so we just applied the new thermal paste and always on 4.4GHZ these are the temps on idle;
47-56
When rendering it's 58-69
So roughly it's 10 degrees difference on idle with this new paste and about 10-15 degrees while rendering. Are these temperatures acceptable?

EDIT
On 4.2 GHZ all the time idle temps are 46-55
Rendering temps are 55-65
 
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Yeah I thought the idle temps were still high, what could be causing that?
Because it's always locked at the overclock?
Or maybe it's because the H80i cooler isn't up to snuff, or it would be cooler in a full tower case rather than a mid....so many variables :/

I mean it's winter now, so i'm just worried about the temps when it gets to summer.
 
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Are you sure you have a good/ even pressure mount on the cooler? Pump running and radiator fans at correct RPMs? Admittedly, it's probably not really a good cooler for an OC'd 5820k. Stock, they're 140W TDP. For reference, I also run my 5820k at constant 4.4Ghz, no speedstep either. I'm running manual voltage of 1.325. My idle temps are about 30-32C avg. I'm using custom loop though for cooling. When I was testing with Noctua NH-U14S air cooler, same OC/voltage would result in load temp during extended benchmarks/OC stresstests of around 90C on hottest core.
 
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I am not an expert and just did a 5820k build. My vcore is set to 1.280 (really just guessing to see if a clock speed would work). My clock speed is 4.4 Ghz. The cpu on heavy loads goes to 1.296 but my temps with an all in one h100 watercooler (different than the one you have) go up to 77 C when stress testing. Idle temps at 34 C. I really am not too worried about 77 C.

Maybe you could lower the core ratio to 43 on all the cores. What is 100 mhz? I can hardly tell the difference between 4.4 and 4. I could probably run at 4.6 with this vcore and I know I can run 4.5 ghz no problem with the same settings. I just lowered it because I didn't want my CPU to get to 80 C via stress tests. Lowering the ratio so you never have to worry about BSOD is a great feeling.
 
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This is looking like normal temps to me for what's going on...

*You got a CPU running quite a bit higher than it's base frequency (no counting "turbo")
*Whopping 140W of thermal design power.
*From what I understand it's being kept at 100% state which is really not needed
*Being cooled by a standard size (or minimal depending on how you look at it) water cooling solution.

I own a 4770K with a H105 and my temps can still hit the 80C + mark when I max it out to the point of instability. How exactly are you overclocking? I'm assuming this is thru BIOS/UEFI correct? Try setting everything that has to do with overclocking to "Auto" if possible and see what happens. Set the CPU speed to 3.8 GHz (all core) and work your way up from there only changing the CPU (all core) freq. Try to find a point when you start gaining a noticeable increases in temp ether/or at idle and load. Using my particular CPU as an example the difference between 4.0GHz with everything "auto" versus 4.5 with a lot of tweaking is just way higher temps and about a 11% gain overall. With 4.4 auto my cpu will simply refuse to heat up past about roughly 70C no matter how long I run it. Where at 4.5 it starts running away after a few minutes of 100% load (type of load and whether or not I have all the fans in the case going full speed changes this).

P.S. i'd let the CPU back off to a lower state (say 15%~35%) it only takes nanoseconds for it to speed up again.
 
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Sorry for the late reply guys, we have been trying to resolve this issue and here is what we have done.

In the end I decided to upgrade my cooler to the Corsair H110I GT. My brother has the same I7 5820K and this cooler, so I knew what temperatures it should get to on idle ect. So we installed it, followed the instructions and it looks neater inside my PC now.

When we switched it on it was still pretty hot in idle, 40-50 on my cores. I was a bit happier with this, using prime95 to do a stress test, the hottest core remains under 70 for rendering videos and that's with leaving my fans and watercooler on stock settings.

This is when it's locked at 4.2GHZ all the time - I did some more research and I discovered something interesting. I didn't mention it when I first started my posts but I think i've discovered an issue. So on real temp and open hardware monitor all along my load always reads as 100%, so I went into task manager > performance and my load is pretty much none existent, yet in resource monitor it's at 100%.....I looked it up online and some people said this could be a virus, but after scanning my PC with 3 different anti virus software it's totally clean. So I have no idea why my load keeps saying it's at 100% when it's not. Sure this would be about right when i'm rendering but not for all the time. This seems to be why it's running hot on idle because it says I have 100% load.

I went into power save settings and my PC is set on balanced. So on Balanced is when it's reading at 100% load, the overclock is locked at 4.2GHZ and temps are idling at 40-50. I tried switching it to power save and then suddenly my load falls right down and temps are idling at around 28-32 and now the GHZ is changing depending on what i'm doing. I have so far tried loading games and doing different things, the GHZ seems to fluctuate along with the load. Guessing this is normal when you want your PC to save power.

My question is, why the heck does my load say 100% when it's at 4.2GHz locked and i'm not doing anything, that's not normal right? Is there a way to fix this?

I mean my brothers same I7 5820K with this cooler is always locked at 4.3GHZ and his readings aren't locked at 100% load. He gets idle temps around the same as mine when mine is on power save mode 28-32. Not sure what mode his is on....

To clarify my bios does have a upgrade available but it's in beta, I don't fancy using a beta bios. So other than that it's up to date.
 
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when you are at 100% load, take a screen shot of the processes you should be able to see what's running and taking up the load.

Also process explorer is good for further tracking down, but you are correct that does seem like a virus or maybe more like a bit coin miner

 
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I don't know how to share pictures on here.
Something called "system idle process" is taking up 99 CPU, everything else is like 1 or 2....that's the only thing I see taking up my CPU

and when it's like this web pages crash, like this one. Had to switch back to power saving mode to post my answer....everything just goes slow when it's at 100% load with that idle process on 99 CPU usage.

If it is a virus or a bit coin miner how do I find / get rid of it. Tried 3 different anti virus software now and it says my PC is clean
 
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System idle process is the untapped / unused workload (as in available so to speak) a system idle processes of 99% means that only 1% of the CPU's is being used (in a nutshell)

Try this: Control panel > Power options > Change plan settings (off to the right of selected plan) > Change advanced power settings (near middle) > Processor power management (near the bottom) > + (expand tree):

Minimum processor state > On battery/Plugged in | Set both of these to let's say 25% > Apply

Maximum processor state > On battery/Plugged in | Set both of these to let's say 50% > Apply

Do this for other power options, not just for power saving mode and see what happens. I'm not exactly sure if I extrapolated it all right but it sound like another program (possibly an OC or Tweeking utility) as monkeyed with the processor state via power management. This is not a bad thing if so, just may have done it for you in a "locked in frequency" OC mode or something. This should force the cpu to idle down and not exceed more than 50% of whatever you set. for example: set to 4GHz in bios only hits 2GHz while in the OS.

You can always change it back. I only have 2 performance profiles I really use via UEFI/BIOS. The other fundamental adjustments to CPU speed come from custom power options (they can be adjusted on the fly).
 
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Have you disabled speedstep or other power saving features in the BIOS/UEFI?

I recommend clearing CMOS jumper on motherboard then go into BIOS and only change multiplier to 4.3 and CPU Voltage to 1.25. and reboot and test. When I run 4.5GHz I always have high temps 70-80 load, while 4.3GHz has 60-70c. Idle at 4.3 is 35 - 45c. Mostly under 40c depending on background tasks.

I have a Cooler Master Nepton 280L AIO water cooler.

Turning o power saving can cause the CPU to run at ull speed at all time and cause high temps when not under load.
 
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