CPU Undervolting

[DaniJ]

Recently build a pc , MSI Z97 gaming 5, i5 4670k .

At the moment using a stock cooler , and its not exactly that great , so temp goes above 70 degree (nothin serious ,,,but still) during intel stress test ,encoding etc

So I tried Undervolting the cpu, by changing the Dynamic CPU Voltage Offset in Intel Extreme Tuning Utility

These are the results :

stock voltage at 100 % load : 1.056v

by undervolting to -100mv   :  0.960v

 

The system seems quite stable at that undervolt , played games continuously , stress test etc ( though I do notice a Very slight lag in games ? ..maybe its in my head I guess)

so my doubt its , if the processor is so stable at such low voltage , is it any indication that it is a good overclocking chip ? I mean I do plan to overclock it, but the cooler I buy , it would help If I can somehow know how good a chip it is to make my decision on the cooler ?

[scaryjam823]

Recently build a pc , MSI Z97 gaming 5, i5 4670k .

At the moment using a stock cooler , and its not exactly that great , so temp goes above 70 degree (nothin serious ,,,but still) during intel stress test ,encoding etc

So I tried Undervolting the cpu, by changing the Dynamic CPU Voltage Offset in Intel Extreme Tuning Utility

These are the results :

stock voltage at 100 % load : 1.056v

by undervolting to -100mv   :  0.960v

 

The system seems quite stable at that undervolt , played games continuously , stress test etc ( though I do notice a Very slight lag in games ? ..maybe its in my head I guess)

so my doubt its , if the processor is so stable at such low voltage , is it any indication that it is a good overclocking chip ? I mean I do plan to overclock it, but the cooler I buy , it would help If I can somehow know how good a chip it is to make my decision on the cooler ?

So you think because you can undervolt it plays a role in overclocking? Doesn't work that way. Just try and overclock the chip now and see what you can get to. You won't do any long term damage, nobody here can tell you how good your processor is. It's random, have to take in ambient temps, case temps, fan layout etc. So many variables that can effect your temps and thus your overclocking only one person can answer your question. That is yourself by doing tests.

[DaniJ]

So you think because you can undervolt it plays a role in overclocking? Doesn't work that way. Just try and overclock the chip now and see what you can get to. You won't do any long term damage, nobody here can tell you how good your processor is. It's random, have to take in ambient temps, case temps, fan layout etc. So many variables that can effect your temps and thus your overclocking only one person can answer your question. That is yourself by doing tests.

oh but I assumed since its quite stable and cool at such low voltage with stock speed , increasing the clock speed wont require more higher voltages ? and hence less heat ?

[scaryjam823]

oh but I assumed since its quite stable and cool at such low voltage with stock speed , increasing the clock speed wont require more higher voltages ? and hence less heat ?

It really doesn't matter the heat, it is all dependant on how the particular chip you had was made. There are some chips (4770ks) that can't even overclock. Not because of thermals, just that the chip was an unlucky chip to have. Whereas some (such as mine) can hit closer to 5ghz. Like I said there is more to it than just thermals and the only way to know what yours can do is push it and see. You won't hurt anything, I overclocked my 4770k with the stock cooler to 4.5ghz to see how high it could get before I got my hyper 212 evo. Then with my evo I tried for 5ghz, hit 4.8ghz at 100c under stress testing. Now with my h100i I hit 85c max at 4.8ghz. 

 

IT wont hurt anything to try and see what it can do, just watch the temps and don't let it run for too long under stress testing. Then you'll know what it can do.

[DaniJ]

It really doesn't matter the heat, it is all dependant on how the particular chip you had was made. There are some chips (4770ks) that can't even overclock. Not because of thermals, just that the chip was an unlucky chip to have. Whereas some (such as mine) can hit closer to 5ghz. Like I said there is more to it than just thermals and the only way to know what yours can do is push it and see. You won't hurt anything, I overclocked my 4770k with the stock cooler to 4.5ghz to see how high it could get before I got my hyper 212 evo. Then with my evo I tried for 5ghz, hit 4.8ghz at 100c under stress testing. Now with my h100i I hit 85c max at 4.8ghz. 

 

IT wont hurt anything to try and see what it can do, just watch the temps and don't let it run for too long under stress testing. Then you'll know what it can do.

thanks, I'll try an overclock and post results here