If cooler is good and temps are below 80c can I go even beyond 4.8mhz ?

peaceduke

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Dec 18, 2014
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It says : there is no cooling of CPU cores , its only a speed of taking a heat from CPU
so if this statement is true , its not recomended overclocking CPU over +1500mhz even if you can cool it at 0c ?

 
Solution
I would argue if you absolutely need that extra 100Mhz. But yes, if the chip is stable at that voltage and frequency then a better cooler may allow for higher overclocks. Honestly you would have a better feel for that given your experience with overclocking that particular chip. The chip is more or less safe up to 100C, just not recommended to keep it there, so you could potentially do a quick stability test to see if you have more room.
When overclocking, you thing about:

Hitting the Thermal Wall
Hitting the Voltage Wall

With modern Intel CPUs, the latter tend to be the 1st one hit. Where you set that wall depends upon the life expectancy you have for that build. Personally, I am comfortable staying below 80C as long as CPU voltage stays below 1.4v ... 1.5v when AVX instructions are present for short durations.
 

Eximo

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What is it?
"Speed of taking a heat from CPU" is more or less the definition of any form of cooling. Something in surface contact with the object to be cooled needs to have a lower temperature then the target. Effective cooling is how much energy is transferred to the cooler substance.

1500Mhz over what? What CPU? What cooling?

If you are after raw numbers, you can use liquid nitrogen. If you want a stable overclock for actual use then there will be electrical limits on the CPU, you can't just keep cooling it and overclocking until it reaches a 100Ghz if that is what you are asking.
 

peaceduke

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I have 5820k , Overclocked yesterdays to 4.6ghz 1.3v , with h100i i had 85c and I decided to set values back to 4.1ghz 1.1v
question: if I buy cooler that will decrease temp to 75-80c with 4.7ghz 1.35 (stock is 3.3) can I work with it as usual ?
 

peaceduke

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Dec 18, 2014
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I have 5820k , Overclocked yesterdays to 4.6ghz 1.3v , with h100i i had 85c and I decided to set values back to 4.1ghz 1.1v
question: if I buy cooler that will decrease temp to 75-80c with 4.7ghz 1.35 (stock is 3.3) can I work with it as usual ?
 

Eximo

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I would argue if you absolutely need that extra 100Mhz. But yes, if the chip is stable at that voltage and frequency then a better cooler may allow for higher overclocks. Honestly you would have a better feel for that given your experience with overclocking that particular chip. The chip is more or less safe up to 100C, just not recommended to keep it there, so you could potentially do a quick stability test to see if you have more room.
 
Solution
The H100i is a pretty poor cooler when ya think about the fact that it gets it's tail kicked by cheaper air coolers like the NH=D15 and R1 while the H100i is 8 - 12 times as loud. If requested, we will not install any CLC in a user's system. Cheap aluminum rads and weak pumps required the designers to compensate with hi speed, noisy fans but even with these, the air coolers still cool better thermally.


A Swiftech H240-X2 would do a better job, dropping temps about 9C while dropping noise by a factor of > 4

b2.jpg

http://www.swiftech.com/h240x2.aspx

I would have no problem at 1.4 volts (1.5 when AVX is present) and temps of 80C during the RoG RB test. Yes, the CPU wont get destroyed and wont start throttling till it gets to near 100C but at those temps the long term viability of the CPu comes into question as the higher heat and higher voltage will degrade the material between circuit traces over time. if you are a competitive overclocker, and it last you 6 months, you won't care .... OTOH, if you make a living off your PC and the CPU dies or becomes unstable over time, you likely would.

What are you using to put the load on your CPU and test stability ?

I would not recommend a synthetic benchmark for this effort unless of course you goal is to get your name on web based leader boards for doing exactly that. If the Pc will eb used for work or entertainment, then I would test with RoG real bench and monitor w/ HWiNFO64 (run sensors only)