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h100i & i5 4690k temp problems [HELP!]

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  • 4690k
  • Intel i5
  • CPUs
  • Build
  • GPUs
  • h100i
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August 13, 2014 2:45:39 AM

Hi guys, i have a build, as above with a r9 280x gpu. When i run prime95, im getting temperatures of up to 78deg(refer to attached) This is currently running on stock 3.5ghz without any OC. Is this normal? When i OC to a 4.5ghz at 1.350voltage, temp would go as high as 90deg. Is there any problem here with my cpu?

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More about : h100i 4690k temp problems

a c 247 à CPUs
August 13, 2014 2:53:23 AM

Firstly, Prime 95 is designed to test the OC capability of a CPU, and thus runs it with all the boost at 100%, so those temperatures are likely.

Secondly, that VCore on OC is very high, it should never get above 1.3V no matter what you do. 1.25 is the maximum recommended with 4.5GHz OC.

Thirdly, anything above the 72C is really hot for the CPU, and shouldn't be sustained. Since you have a Liquid cooler, I'd expect better results. 90C is nowhere near to those better results!

Your temp while running Prime 95 is pretty high, but still ok. When you OC, manually set your VCore to 1.25V. It should not go beyond 72-75C with a good cooler like the one you got.

I'd say check if its mounted properly. Also, what's your idle temp, temp while browsing/ streaming and temp while gaming at high-ultra?
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a c 247 à CPUs
August 13, 2014 2:57:06 AM

Also, just saw the pic after submitting my reply,

I suppose you were running Prime 95 when those readings were recorded, the readings are ok if you were running the test at that time.

Your load is at 100% and the readings are fine for that load.
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August 13, 2014 2:59:46 AM

MeteorsRaining said:
Also, just saw the pic after submitting my reply,

I suppose you were running Prime 95 when those readings were recorded, the readings are ok if you were running the test at that time.

Your load is at 100% and the readings are fine for that load.


Thanks for the answer, if i sync my core to 45, and set a vcore nothing more than 1.3 my comp will crash when i run the prime 95

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a c 247 à CPUs
August 13, 2014 3:10:35 AM

Ok here's what you should try, leave the VCore to Auto, try OCing by 500MHz (4.5GHz) and DON'T RUN PRIME 95. Run just Core Temp it should show 30-40C temp with 0-10% usage.

Check VCore, if it goes beyond 1.28V on the above mentioned OC, lower it manually to 1.2xV, where x should not be more than 5. Its a trial and error, look for the optimal VCore where its stable. You may get BSOD some times but setting it to 1.22V should suffice in most cases. Then run Prime 95.
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August 13, 2014 7:49:41 AM

MeteorsRaining said:
Ok here's what you should try, leave the VCore to Auto, try OCing by 500MHz (4.5GHz) and DON'T RUN PRIME 95. Run just Core Temp it should show 30-40C temp with 0-10% usage.

Check VCore, if it goes beyond 1.28V on the above mentioned OC, lower it manually to 1.2xV, where x should not be more than 5. Its a trial and error, look for the optimal VCore where its stable. You may get BSOD some times but setting it to 1.22V should suffice in most cases. Then run Prime 95.


Will take note and ill try!
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a c 247 à CPUs
August 13, 2014 7:51:08 AM

poohsee said:
MeteorsRaining said:
Ok here's what you should try, leave the VCore to Auto, try OCing by 500MHz (4.5GHz) and DON'T RUN PRIME 95. Run just Core Temp it should show 30-40C temp with 0-10% usage.

Check VCore, if it goes beyond 1.28V on the above mentioned OC, lower it manually to 1.2xV, where x should not be more than 5. Its a trial and error, look for the optimal VCore where its stable. You may get BSOD some times but setting it to 1.22V should suffice in most cases. Then run Prime 95.


Will take note and ill try!


I'll hope for the best results :) 
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August 13, 2014 7:51:14 AM

Sean76 said:
Yea those temps are really bad, I'm running the 4690k as well. Although I'm using the Hyper 212 Evo, @4.7ghz@1.295Vcore and the hottest I've seen the cpu get is 52C during Firestrike physics bench. I don't see the point to running programs like Prime, in reality, nothing will ever push a processor to 100% for hrs on end, so why do people risk degradation by running such a harmful program? Just to say that you could??


Youre right. My cpu on general use dont maximize to 100% usage and thus damage my lifespan of my parts. Probably running just to test stability?
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a c 247 à CPUs
August 13, 2014 7:54:31 AM

Just to clarify here: Running PRIME 95 DOES NOT damage your CPU. Testing a certified OCable CPU for OCing is not damaging it, this is what it is made for and that's why it has a 'k' on it. This CPU is supposed to be a gamer's choice, and therefore should not be very hot. And that test absolutely checks that with 100% load.

TESTING a CPU for 100% usage is not harmful, continuously RUNNING it at 100% for hours is also not harmful provided the temp is under 72C.
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August 13, 2014 8:01:52 AM

MeteorsRaining said:
poohsee said:
MeteorsRaining said:
Ok here's what you should try, leave the VCore to Auto, try OCing by 500MHz (4.5GHz) and DON'T RUN PRIME 95. Run just Core Temp it should show 30-40C temp with 0-10% usage.

Check VCore, if it goes beyond 1.28V on the above mentioned OC, lower it manually to 1.2xV, where x should not be more than 5. Its a trial and error, look for the optimal VCore where its stable. You may get BSOD some times but setting it to 1.22V should suffice in most cases. Then run Prime 95.


Will take note and ill try!


I'll hope for the best results :) 


Sorry to ask you another question. Pardon me as its my first time having an overclocking pc. i currently set my core to 4.5ghz. and set to auto for my voltage. my cpuid reads up to 1.275 but when i run cinebench, cinebench doesnt complete.

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a c 247 à CPUs
August 13, 2014 8:04:18 AM

1.275V is okish, but nothing which should force you to decrease OC. What happens to Cinebench? It freezes? Error?
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a c 247 à CPUs
August 13, 2014 8:06:02 AM

Tip: Try CPU Z, its as good and very much trusted :) 
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August 13, 2014 8:07:31 AM

MeteorsRaining said:
1.275V is okish, but nothing which should force you to decrease OC. What happens to Cinebench? It freezes? Error?


my cpu just BSOD after running a cinebench test. running at 4.5ghz with auto vcore. whtats wrong
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a c 247 à CPUs
August 13, 2014 8:13:15 AM

You must realize, you are using a benchmarking tool that is made to stress the system. Your system is most likely not actually stable. Try lowering your overclock, then run it again. 4.3GHz first then 4.4GHz and test again with both.
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August 13, 2014 8:16:48 AM

MeteorsRaining said:
You must realize, you are using a benchmarking tool that is made to stress the system. Your system is most likely not actually stable. Try lowering your overclock, then run it again. 4.3GHz first then 4.4GHz and test again with both.


so with that my cpu is not stable for a 4.5ghz? i will try 4.2 and 4.3 respectively. i hope u can guide me through

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a c 247 à CPUs
August 13, 2014 8:26:29 AM

poohsee said:
MeteorsRaining said:
You must realize, you are using a benchmarking tool that is made to stress the system. Your system is most likely not actually stable. Try lowering your overclock, then run it again. 4.3GHz first then 4.4GHz and test again with both.


so with that my cpu is not stable for a 4.5ghz? i will try 4.2 and 4.3 respectively. i hope u can guide me through



Don't worry I will. We'll sort this out. But first check from 4.2GHz onwards and run Prime 95/ Cinebench for 5-10 mins. The VCore should not be 1.3V+ and the tests should not result in BSOD. IF they result in BSOD, that means your CPU is not stable with those config. Disable LLC. With LLC disabled and the V Core set to 1.2xV you will never exceed 1.2xV at full load.

I use 4790K 4.5GHz, 1.25-1.28V stable with H110 so you can trust me :) 
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August 13, 2014 8:40:11 AM

MeteorsRaining said:
poohsee said:
MeteorsRaining said:
You must realize, you are using a benchmarking tool that is made to stress the system. Your system is most likely not actually stable. Try lowering your overclock, then run it again. 4.3GHz first then 4.4GHz and test again with both.


so with that my cpu is not stable for a 4.5ghz? i will try 4.2 and 4.3 respectively. i hope u can guide me through



Don't worry I will. We'll sort this out. But first check from 4.2GHz onwards and run Prime 95/ Cinebench for 5-10 mins. The VCore should not be 1.3V+ and the tests should not result in BSOD. IF they result in BSOD, that means your CPU is not stable with those config. Disable LLC. With LLC disabled and the V Core set to 1.2xV you will never exceed 1.2xV at full load.

I use 4790K 4.5GHz, 1.25-1.28V stable with H110 so you can trust me :) 
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i set my core to 4.4ghz with vcore set to auto. vcore is at 1.249v. and below is the core temp when i run cinebench.


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a c 247 à CPUs
August 13, 2014 8:48:52 AM

Well it looks like you're running the test with a stock cooler rather than a liquid one. Too high of a temperature on 100%. Is your cooler running properly? Pump, Radiator and stuff?

I'd not say the CPU is extremely hot, but yes that's the kind of temp you really should avoid. Anyways 82C is the max recommended in tests with liquid coolers. 85C on air. 90c on stock. Check your cooler!
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a c 247 à CPUs
August 13, 2014 8:55:19 AM

Also, try with your cooler in push-pull config.
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August 13, 2014 9:05:00 AM

MeteorsRaining said:
Also, try with your cooler in push-pull config.


my cpu airflow. is this alright?

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a c 247 à CPUs
August 13, 2014 9:07:35 AM

Only 2 intakes, maybe cool air is not coming in properly. Get the Radiator fans in a push-pull config. Like one intake and one exhaust.
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August 13, 2014 9:21:15 AM

MeteorsRaining said:
Only 2 intakes, maybe cool air is not coming in properly. Get the Radiator fans in a push-pull config. Like one intake and one exhaust.


so adding 2 more fans on top of the radiator to pull air?

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a c 247 à CPUs
August 13, 2014 9:38:37 AM

I just pondered upon the fact that hot air rises, so the air on the top would be hotter than bottom. Air at bottom is cooler and hence your fan orientation is good enough to function normally. I won't recommend to add 2 more fans now. I'd rather advice you to check your cooler if the liquid is getting blocked.
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August 15, 2014 9:51:18 AM

Running any of 3Dmark's benchmarks, such as Firestrike, is more than adequate for testing system stability and overclocks........anyone who thinks torturing your cpu for 5-6 hours on end is okay, belongs in the nuthouse.
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