4790K H105 at 4.8GHz 1.275Volts

Marcos

New member
Hey guys,

The maximum temperatures I get with my 4790K with an H105 at 4.8GHz are:

81C 81C 81C 79C at 1.275Volts and multiplier x48


Is this safe? If so, can I try some higher clocks?

Thanks
 
I wouldn't go any higher with temps, keeping it under 80*c would be better for a long term overclock.
Going over 80*c you are running on the high end of temps and your CPU will start to degrade over time.
 
Thats a great chip you got there, you very possibly have a golden chip there with those voltages!!

As for temps etc, I wouldn't personally push it any higher (as mentioned above).

Most of the time, I just run mine at 4.4 unless I am doing some video editing and conversions, and or some rendering images.

Mine pushes 4.8 at a little bit more than yours does, mine is not quite golden standard, but it in the next higher percentages of them, without looking think it 1.292 for stable at 4.8 (I even went to single digits to try and squeeze every last drop out of it without messing with the base clock).

Well done on the overclock. :)
 
Thanks guys for your info. I won't push it more.


@YouWHat,

I started with undervolting and it ran stable at 0.920 at 4.0GHz. Compared it with Tom's results(1.000 volt @ 4.0GHz) so I new this chip had potential.

Video editing, rendering etc. is exactly what I am going to use for it also so I will keep it at 4.4 for now.

Do you have yours running with or without turbo?
 
Thanks guys for your info. I won't push it more.


@YouWHat,

I started with undervolting and it ran stable at 0.920 at 4.0GHz. Compared it with Tom's results(1.000 volt @ 4.0GHz) so I new this chip had potential.

Video editing, rendering etc. is exactly what I am going to use for it also so I will keep it at 4.4 for now.

Do you have yours running with or without turbo?

Mine runs at 0.935 @ 4.0, and 1.110 @ 4.4, and yes, I leave it running the turbo (default) speed it wants to, just with lowered volts in the XMP profile for the day to day things, only apply the overclocked profile when needed then.
 
Mine runs at 0.935 @ 4.0, and 1.110 @ 4.4, and yes, I leave it running the turbo (default) speed it wants to, just with lowered volts in the XMP profile for the day to day things, only apply the overclocked profile when needed then.

Good point. Forgot to save the profile. Thanks
 
can anyone explain why 80c is ok when the tcase is 72c?

This is the same with most intel chip, everyone says keep under 80 and few have tcases of 60c
 
can anyone explain why 80c is ok when the tcase is 72c?

This is the same with most intel chip, everyone says keep under 80 and few have tcases of 60c

Because at 90*c your CPU will start to fry so keeping under 80*c you are keeping within the safe zone. A few *c over the 72*c will still degrade the cpu but not as much and will have a much less effect over time than running at 80*c+.

It differs from CPU to CPU though but for Sandy/Ivy and Haswell, under 80*c is recommended.
 
Very nice numbers dude, I got similar on my 4790K with a H100.

v78g9x.png
 
can anyone explain why 80c is ok when the tcase is 72c?

This is the same with most intel chip, everyone says keep under 80 and few have tcases of 60c

Because at 90*c your CPU will start to fry so keeping under 80*c you are keeping within the safe zone. A few *c over the 72*c will still degrade the cpu but not as much and will have a much less effect over time than running at 80*c+.

It differs from CPU to CPU though but for Sandy/Ivy and Haswell, under 80*c is recommended.

Tcase and Tjunction are two different temperatures. Tjunction is the core temperature as we know it and measured from between the cores. Tcase is temperature measured on the IHS.

The reason why we don't use Tcase is because there is typically a positional error in measuring the temperature accurately. So if your Tcase is say, 50C, your Tjunction will be higher simply because it is closer to the source of the heat. How much hotter is guesswork without Tjunction since you'd have to extrapolate from the Tcase to guess the Tjunction. If you have a Tjunction to read from the Tcase is useless.

On the 4790K the Tcase is 74C where the Tjunction is 105C. As Sieb says the sensible Tjunction range for an everyday overclock is around 80C. Go a little bit lower (70C-75C) if you regularly put the CPU under heavy loads or up into the 80s if you use it lightly, e.g. gaming where it won't reach higher temperatures anyway. Any higher than that and you risk excessive degradation and instability.

M&P
 
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