[SOLVED] i7 4790k overclock issues

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imrdarren

Nov 22, 2018
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I followed this youtube guide (https://www.youtube.com/watch?v=eDHLGq-VQM4) on overclocking my i7 4790k on the same motherboard. It does work/run without crashing but the temperatures are reaching ~87c on the first 2 cores and the last two sit 80c... I have a Corsair H100i water cooler and my frequency/voltages are the same in the video at 1.1v and target freq 4.2ghz. I tried other overclocking settings (4.4-4.7Ghz @ 1.2-1.35v) but they pretty much crash immediately after running prime95. After reading multiple articles and watching videos of other's overclocking experience with this CPU I clearly have some sort of issue with it. It is currently around 70-80F room temperature if not sometimes colder.

PC Specs -
i7 4790k
Corsair H100i V1
Asus Maximus VII Gene
Corsair Vengeance DDR3 4x4 16GB @1866Mhz
Asus ROG Strix 1070 8GB
Corsair AX860i PSU
WD Black 1TB
(took out dysfunctional SSD)

P.S. - I have 2 Corsair SP120's on the H100i and in my case (Corsair 350D) 1 AF120 in the back as well as 1 AF140 in the front.
 
Solution
Eximo
Well low 80s isn't the end of the world in terms of temperature. Every CPU is a little different, so you do have to play around.

My old i7-4770k is an average sample and I was able to do 4.3Ghz @ 1.29 core voltage. 4.5Ghz at 1.35 was possible but overheated in the high 90s. Would have required delidding to achieve. I would say the average i7-4790k should be about 300Mhz over that at the same voltages.

Set a fixed voltage while trying to figure out the CPU's behavior, go back and do offset and all that once you know what voltage it takes for what clock speed. Don't forget to increase the voltage input (Vin on ASUS) TO the CPU while you experiment. If I recall I was pumping something like 2.0 volts into the chip.

Not really any more...
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Eximo

Eximo

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Well low 80s isn't the end of the world in terms of temperature. Every CPU is a little different, so you do have to play around.

My old i7-4770k is an average sample and I was able to do 4.3Ghz @ 1.29 core voltage. 4.5Ghz at 1.35 was possible but overheated in the high 90s. Would have required delidding to achieve. I would say the average i7-4790k should be about 300Mhz over that at the same voltages.

Set a fixed voltage while trying to figure out the CPU's behavior, go back and do offset and all that once you know what voltage it takes for what clock speed. Don't forget to increase the voltage input (Vin on ASUS) TO the CPU while you experiment. If I recall I was pumping something like 2.0 volts into the chip.

Not really any more expertise out there then der8auer. Pretty much the record holder on all the things.
 
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