Help! 4770K Hitting 100c @ Stock On Water [SOLVED]

[Gr3y Wolf]

Hi Guys, this is my first post.

As the title says, my 4770K is hitting 100c at stock settings with a water cooler... the cooler in question is a H100i.

Oh, and that is running Prime95 for only a couple of minutes.

Surely this is not normal...

I am monitoring the temps and voltage etc with HWMonitor, its only 1 core that is hitting 100c, one of the cores is down to 80c while the other 2 are somewhere inbetween. But all it takes is for one core to hit the Tjmax and the CPU starting throttling.

As soon as i stop the test, temps go down to 30c almost instantly.

I am at a loss at what could be causing this - if anyone can offer any help it would be much appreciated.

Thanks in advance.

 

[ShintaiDK]

Sounds like wrongly seated heatsink. Try reseat it.

 

[rgallant]

Hi Guys, this is my first post.

As the title says, my 4770K is hitting 100c at stock settings with a water cooler... the cooler in question is a H100i.

Oh, and that is running Prime95 for only a couple of minutes.

Surely this is not normal...

I am monitoring the temps and voltage etc with HWMonitor, its only 1 core that is hitting 100c, one of the cores is down to 80c while the other 2 are somewhere inbetween. But all it takes is for one core to hit the Tjmax and the CPU starting throttling.

As soon as i stop the test, temps go down to 30c almost instantly.

I am at a loss at what could be causing this - if anyone can offer any help it would be much appreciated.

Thanks in advance.

[with core temps]I have one core [ at idle ] thats runs @18c with other cores at 25,34,27c = bad sensors but the chip oc's with low volts so I will kept it ,they all level out under load.
idle for me is 3.5 /load 4.6

 

[ShintaiDK]

Another issue could be the pump isnt running I guess.

 

[Ieat]

Reseat the heatsink. One side likely isn't making good contact. Intel chip can idle in the 30s with no heatsink. I've tried it before.

 

[SickBeast]

If you hooked up the pump to a fan header that is being controlled by the motherboard, it could be making your pump go too slow. Check your BIOS and make sure that the fan header is set to run at full speed if you have the pump attached to it.

 

[videogames101]

1. check pump is working
2. check rad fans spinning
3. re-seat
4. verify temps using another cooler/cpu


pretty simple process of elimination

 

[Jovec]

Assuming it's not a mount/WC issue, it's likely a combination of 1) P95 w/AVX and 2) motherboard pushing too many volts.

 

[Gr3y Wolf]

Thanks for all the replies.. :thumbsup:

I have checked everything you guys have said to, and all seems to be running just fine - pump is working (at aleast according to Corsair Link) and all fans are spinning. So that only left one option - reseat the heatsink/pump, so i have just done that and the only difference it has made is that idle temps are now down to 0-1c above ambient, which is better that the 5-7 above that i was getting before... But, load temps are no different - as soon as i start Prime temps shoot to around 80c instantly, and stay there for a couple of minutes before climbing back to around 100c...

But i feel i may have the wrong end of the stick here, as i was monitoring 'Core' temps it seems, and only one of them hits 100c (first core), according to HWMonitor the actual CPU temp never goes above 89C - which still seems high considering im running a water cooler at stock CPU settings... So... what am i supposed to be monitoring - core temps, or CPU temps?

Just so you can see what is happening:

Idle stats:

Load stats:

Any further help is welcome...

Thanks again.

 

[ShintaiDK]

Can you check with CPU-Z, what your clockspeed actually is under the load?

http://www.cpuid.com/softwares/cpu-z.html´

It also sounds wierd that it hits 80C for a few minutes before going up again. When you stop, does it drop more or less instantly down in temperature, or is it more a slow climb down as well? If so, then try see if you can visually see the pump working and working at the required speed.

 

[Gr3y Wolf]

Hi

CPU-Z under load, as requested:

Yes, the temp drops instantly down to about 24c when i stop the test.

Here is Corsair Link showing pump speed:

Thanks.

 

[know of fence]

Haswell processors come with a built in genuine Intel 2nd generation thermal insulation gap.
Once you made sure that there is no merit to the blame-the-customer "helping" suggestions of the resident intel shills, maybe you should look up delidding.

There is also this famous thread.
http://forums.anandtech.com/showthread.php?t=2261855

 

[ShintaiDK]

Hi

CPU-Z under load, as requested:

Yes, the temp drops instantly down to about 24c when i stop the test.

Here is Corsair Link showing pump speed:



Thanks.

Your BIOS is autooverclocking the CPU. Try see if you can find something called Multicore enchancement or something similar in the BIOS and disable it. AI overclocking tend to overdo voltage.

 

[Gr3y Wolf]

Haswell processors come with a built in genuine Intel 2nd generation thermal insulation gap.
Once you made sure that there is no merit to the blame-the-customer "helping" suggestions of the resident intel shills, maybe you should look up delidding.

There is also this famous thread.
http://forums.anandtech.com/showthread.php?t=2261855

Thanks for the suggestion, but i was already aware of this and what not want to risk damaging the CPU unless i thought i had no other alternative...

 

[Gr3y Wolf]

Your BIOS is autooverclocking the CPU. Try see if you can find something called Multicore enchancement or something similar in the BIOS and disable it. AI overclocking tend to overdo voltage.

Ah... i had suspected that the BIOS may be auto overclocking - but wasnt sure... and yes there is something called Multicore Enhancement and it is enabled - didnt know what it was for... I will go ahead and disable it... BRB.

 

[Gr3y Wolf]

Ok, i have disabled the Multicore Enhancement in the BIOS and it has had 2 effects - 1. Idle temps are higher (30c instead od the previous 24), but, and 2. Load temps are down by about 10c

HWMonitor after disabling Multicore Enhancement at load:

Although reduced, i still feel that this is too high running at stock on water... if you have ANY other suggestions i am all ears.

Thanks anyway for your suggestion :thumbsup:

EDIT: When i say load temps are down - i meant the highest core temp. CPU temp is the same it seems.

 

[TerryMathews]

Haswell processors come with a built in genuine Intel 2nd generation thermal insulation gap.
Once you made sure that there is no merit to the blame-the-customer "helping" suggestions of the resident intel shills, maybe you should look up delidding.

There is also this famous thread.
http://forums.anandtech.com/showthread.php?t=2261855

Also worth noting that the Corsair CLCs have a notoriously weak clamping mechanism for Intel.

I had one that worked fine on skt 1366 but had to be replaced when I went to Haswell. Cut my temps by 20oC.

 

[Gr3y Wolf]

Also worth noting that the Corsair CLCs have a notoriously weak clamping mechanism for Intel.

I had one that worked fine on skt 1366 but had to be replaced when I went to Haswell. Cut my temps by 20oC.

Thanks for the suggestion, but since i reseated it, that was one of the things i checked - everything seems fine to me, the heatsink/pump wont move once screwed down and seems to put more than enough pressure on the CPU.

 

[Gr3y Wolf]

Hi Guys

I have ran into another issue here - im beginning to wonder whether maybe the fault is with the CPU itself, i have just attempted to over clock by inceasing the multiplier, but i cannot even get to 4.2Ghz on this thing - crashes while trying to boot windows. Seems this is an overclockable CPU that wont overclock...

Temps still could be better, still hitting 89-90c on the CPU on water at stock...

I actualy bought the PC from a guy selling it on ebay - i paid £900 for it, which seemed reasonable at the time - but now im wondering if i made the right decision...:\

 

[SickBeast]

900 pounds!? I really hope that's a typo...

Just FYI I am hitting 90C on my overclocked Pentium G3258 at 4.4ghz at 1.3v. I am using an H60 with low speed fans in a push-pull configuration.

I'm wondering if I need to add some washers to put more pressure on the CPU.

 

[Gr3y Wolf]

900 pounds!? I really hope that's a typo...

Just FYI I am hitting 90C on my overclocked Pentium G3258 at 4.4ghz at 1.3v. I am using an H60 with low speed fans in a push-pull configuration.

I'm wondering if I need to add some washers to put more pressure on the CPU.

No, it was not a typo... 900 pounds is what i paid, before i bought it, i did the math and to buy everything seperately it would have cost at least £1400 with the parts that are in it.

Specs:

Intel Core i7 4770k
Asus Maximus VI Hero
G.Skill Trident X 16GB @ 2400Mhz 10-12-12-31 1T
EVGA GTX 780 Ti SC ACX
Corsair AX750 Gold
CMSTORM Scout 2
120GB Kingston Hyper X SSD
Seagate 1TB SATA 3
Seagate 750GB SATA 2
Corsair H100i
Windows 8.1 Pro 64Bit
+ about 4 other case fans.

Anyway...

I am running at about 1.115v at 3.9Ghz (boost speed) and hitting 90c on a H100i - which is way too high.

As i mentioned previously - i believe the pressure on the cpu is enough - the screws were pretty hard to screw in as it is. I dont want to put too much pressure on the CPU and risk damaging it. But thanks for the suggestion.

 

[GLeeM]

My 4770K only OCs to 4.1Ghz and temps are upper 90s with P95 28.5 small ftts with good air Noctua NH-U14S or good water H110. (if using blend instead of small ffts it takes a few minutes to start small ffts and then get hot).
If you truly have enough pressure on the mount then I hate to say what I think it might be: a guy on another forum had a high temp spread between cores - 20 degree difference. He delidded it and found an air bubble in the TIM over the hot core

Lots of people sell a poor overclocking CPU and try the CPU lottery and buy another over and over again until they get a good one. It is almost like an addiction with them, they will even sell an excellent overclocker in the hopes of getting a golden chip.
But usually if buying used I would expect a poor overclocker.

 

[ShintaiDK]

Hi Guys

I have ran into another issue here - im beginning to wonder whether maybe the fault is with the CPU itself, i have just attempted to over clock by inceasing the multiplier, but i cannot even get to 4.2Ghz on this thing - crashes while trying to boot windows. Seems this is an overclockable CPU that wont overclock...

Temps still could be better, still hitting 89-90c on the CPU on water at stock...

I actualy bought the PC from a guy selling it on ebay - i paid £900 for it, which seemed reasonable at the time - but now im wondering if i made the right decision...:\

Ebay?... :\

Also if you OC. You have to raise the voltage to ensure stability. You cant just change the multiplier and expect it to work.

 

[Kenmitch]

For curiosities sake what happens to the temps if you disable hyper-threading?

The mounting screws on the H100i are fully tightened? I don't think they have proper mounting pressure unless they are as tight as they will go.

 

[Gr3y Wolf]

Ebay?... :\

Also if you OC. You have to raise the voltage to ensure stability. You cant just change the multiplier and expect it to work.

Yes, eBay....

Yeah i am aware that you have to raise the voltage, i am currently running at 4.2Ghz with voltage at 1.16v, but after 2 mins of Prime the 'CPU' (not core this time) is hitting 100C....

I dont get it... why is this thing running so damn HOT???