CPU High Performance Mode (curiosity)

[darkwizard06]

Good day to all!

 

I am a little bit curious about this scenario. We all know that applying high voltage to the cpu will increase its temperature (greater than idle temperatures).

I have Core i5 4790 which runs at 0.699 volts at 800mhz idle, when using stress tester like aida64, its voltage will go up around 1.125volts at 3.6 - 4ghz.

 

Now, my question; Why is it that if I set the power options to "high performance" (sets the minimum cpu freq to 100%) on windows still gave me the exact same idle temperature at 32 deg. C even the cpu is constantly receiving 1.125 volts all the time? ha ha. I know its a little bit silly question but please bear with me.

[done12many2]

7 minutes ago, darkwizard06 said:

Good day to all!

 

I am a little bit curious about this scenario. We all know that applying high voltage to the cpu will increase its temperature (greater than idle temperatures).

I have Core i5 4790 which runs at 0.699 volts at 800mhz idle, when using stress tester like aida64, its voltage will go up around 1.125volts at 3.6 - 4ghz.

 

Now, my question; Why is it that if I set the power options to "high performance" (sets the minimum cpu freq to 100%) on windows still gave me the exact same idle temperature at 32 deg. C even the cpu is constantly receiving 1.125 volts all the time? ha ha. I know its a little bit silly question but please bear with me.

 

Voltage does not dictate temperature.  Load combined with voltage does.  Take that same voltage and apply a load and watch temps shoot right up.  

 

That's part of the reason why people need to stop starting the "did I win the silicon lottery" threads.  It's not impressive that a CPU has a low voltage at a moderate overclock.  What's impressive is if you can clock it to the highest of clock speed WHILE maintaining a load.  Otherwise, what good is the CPU?

 

**I should add that CPU clock speed has a small impact on temps as well, but it's very small compared to load and voltage.

[darkwizard06]

3 minutes ago, done12many2 said:

 

Voltage does not determine temperature.  Load does.  Take that same voltage and apply a load and watch temps shoot right up.  

 

That's part of the reason why people need to stop starting the "did I win the silicon lottery" threads.  It's not impressive that a CPU has a low voltage at a moderate overclock.  What's impressive is that you can clock it to the highest of clock speed WHILE maintaining a load.  Otherwise, what good is the CPU?

I see thanks. But if I maintain this kind of voltage to my cpu all the time, will it affect my vrm on motherboard? I have one motherboard died on me last month, I am just using it but in high performance mode. The board just shuts off with no warnings and doesn't start. (PSU is okay)

[done12many2]

8 minutes ago, darkwizard06 said:

I see thanks. But if I maintain this kind of voltage to my cpu all the time, will it affect my vrm on motherboard? I have one motherboard died on me last month, I am just using it but in high performance mode. The board just shuts off with no warnings and doesn't start. (PSU is okay)

 

No, it will not kill your motherboard.  If your last board died from locking voltage via High Performance mode, it was going to die anyways.

 

Keep in mind that you are running within the stock voltage spec for that chip.  Do not worry about setting Windows Power Options to High Performance.

 

It is a better practice to use Balanced when you don't need the extra performance as it saves power and keeps your CPU cooler overall.  I overclock my CPU heavily, yet I take full advantage of Intel and Windows power savings features when I'm not torturing the CPU simply because they spare my CPU of unnecessary heat when it's not needed.  

[darkwizard06]

3 minutes ago, done12many2 said:

 

No, it will not kill your motherboard.  If your last board died from locking voltage via High Performance mode, it was going to die anyways.

 

Keep in mind that you are running within the stock voltage spec for that chip.  Do not worry about setting Windows Power Options to High Performance.

 

It is a better practice to use Balanced when you don't need the extra performance as it saves power and keeps your CPU cooler overall.  I overclock my CPU heavily, yet I take full advantage of Intel and Windows power savings features when I'm not torturing the CPU simply because they spare my CPU of unnecessary heat when it's not needed.  

I see. Thank you so much.

[done12many2]

1 minute ago, darkwizard06 said:

I see. Thank you so much.

 

You're welcome good luck with the new motherboard and setup!