i7-4790K Voltage help

[Danny91]

Hi hoping you guys could give me a hand, i am using a asus z97-k motherboard with this processor the only thing i have changed in the bios is to enable XMP for my memory to run at 2133 mhz however when under load and the CPU is turbo boosting it seems the voltage on all the programs asus AI, Aida64, CPUID is going to 1.325v which i am conserned about... Does anyone know why with everything on auto, no overclock on the CPU only XMP enabled it would be going that high for turbo boost? Help would be appreciated thanks!

[1Scotty1]

The "limit" at which I would be concerned is 1,35V so you are in the safe zone, albeit very close, but don't worry you are not running turbo 24/7 are you?

[BoredErica]

If the CPU is going way above what the auto is set at, it's probably due to adaptive voltage mode and a synthetic stress test together. Might want to double check that.

[JamGorby]

That's excessive for sure. What are temps like?

[Danny91]

Thanks for all the replies so far

 

After fiddling with the bios it seems that the load XMP option gives you another option to enable core optimisation (Yes or no) in a popup which sync's all cores or  if you select no leaves it at auto

 

Selecting YES my turbo boost goes to 4.4GHZ while under full load over all cores using the 1.325v with temps maxing at 77c but jumping around from mid 60's to 77 ish.

 

Selecting No turbo boost under full load only goes to 4.2Ghz and the voltage goes to 1.213v not under full load with only one or 2 cores loaded it seems to go to 4.4Ghz just not while under 100% load. Temps are Jumping between mid 50's and 60's.

 

Is it not strange how selecting Yes add's so much extra voltage?

[BoredErica]

Thanks for all the replies so far

 

After fiddling with the bios it seems that the load XMP option gives you another option to enable core optimisation (Yes or no) in a popup which sync's all cores or  if you select no leaves it at auto

 

Selecting YES my turbo boost goes to 4.4GHZ while under full load over all cores using the 1.325v with temps maxing at 77c but jumping around from mid 60's to 77 ish.

 

Selecting No turbo boost under full load only goes to 4.2Ghz and the voltage goes to 1.213v not under full load with only one or 2 cores loaded it seems to go to 4.4Ghz just not while under 100% load. Temps are Jumping between mid 50's and 60's.

 

Is it not strange how selecting Yes add's so much extra voltage?

Is it also 1.325v when you're gaming? Or is it only for those tests? If it's the same then it's the mobo's auto overclocking rules being dumb. If it's not the same then it's some sort of adaptive voltage mode most likely.

Of course the game can't be single-threaded, pop BF4 or GTA V or something like that. There's no risk of imminent failure, 1.325v is still within sane values.

[Danny91]

Is it also 1.325v when you're gaming? Or is it only for those tests? If it's the same then it's the mobo's auto overclocking rules being dumb. If it's not the same then it's some sort of adaptive voltage mode most likely.

Of course the game can't be single-threaded, pop BF4 or GTA V or something like that. There's no risk of imminent failure, 1.325v is still within sane values.

 

 

Hi, thanks for all the replies didnt expect so many so quickly! I will give this a try later on tonight don't have time to sit down and really have a go at it right now but ill update the post later. Thanks for all the help so far

[JamGorby]

Thanks for all the replies so far

 

After fiddling with the bios it seems that the load XMP option gives you another option to enable core optimisation (Yes or no) in a popup which sync's all cores or  if you select no leaves it at auto

 

Selecting YES my turbo boost goes to 4.4GHZ while under full load over all cores using the 1.325v with temps maxing at 77c but jumping around from mid 60's to 77 ish.

 

Selecting No turbo boost under full load only goes to 4.2Ghz and the voltage goes to 1.213v not under full load with only one or 2 cores loaded it seems to go to 4.4Ghz just not while under 100% load. Temps are Jumping between mid 50's and 60's.

 

Is it not strange how selecting Yes add's so much extra voltage?

Actually it's not that strange now that you (we) know what the culprit was. My motherbaord also has a similar option which allows all cores to reach turbo speeds at load. On my board it's called "Multicore Enhancement". This option does raise voltage as well. My board doesn't raise it quite so high though (about 1.26). Having that option with the XMP option is a rather strange place to put it. 

The 'no" option looks to be more in line with how a stock 4790k should run. I think Asus is erring on the higher voltage side to ensure stability. At either rate, you likely have wiggle room to take those voltages down if you want to run at either setting.