Turbo boost doubt

[Leoplate25]

Hi, i have an existencial and silly doubt. If you disable turbo boost; will a game or a program uses more cpu than if you have the turbo on? Or it depends on the core count? Thanks.

 

[eidairaman1]

Turbo is a power saving function and manufacturers guaranteed overclock of a single core within set limits. Programs will only use what is needed, so a 3D game vs a word Processing program, or cruncher games and crunchers will utilize the cpu more than the word processor, whether turbo is on or off.

 

[Leoplate25]

Turbo is a power saving function and auto overclock of a single core within set limits. Programs will only use what is needed, so a 3D game vs a word Processing program, or cruncher games and crunchers will utilize the cpu more than the word processor.

But for example, if i play Far Cry New Dawn with turbo boost disabled, will the percentage of usage be higher or the same? Thanks!

 

[eidairaman1]

If you want to do overclocking and find max clocks on all cores you go about it manually.

But for example, if i play Far Cry New Dawn with turbo boost disabled, will the percentage of usage be higher or the same? Thanks!

If you disable turbo and leave the cpu at its stock speed it will not clock up on its own, the game will only use whats there, nothing more as it cant. Example a cpu is clocked at 3.6GHz it's turbo is 4.2GHz. When Turbo is enabled the game if demanding enough will cause the cpu to ramp a single core to 4.2GHz. If Turbo is off the CPU will run at 3.6GHZ on all cores no matter what.
Example My CPU is overclocked with turbo disabled, the game will use 5.0GHz on 1 core if it is singled threaded, if multi threaded it will spread across 2-8 cores and use that 5.0GHz. But software will utilize what it needs for energy savings.

 

[Leoplate25]

If you want to do overclocking and find max clocks on all cores you go about it manually.



If you disable turbo and leave the cpu at its stock speed it will not clock up on its own, the game will only use whats there, nothing more as it cant. Example a cpu is clocked at 3.6GHz it's turbo is 4.2GHz. When Turbo is enabled the game if demanding enough will cause the cpu to ramp a single core to 4.2GHz. If Turbo is off the CPU will run at 3.6GHZ on all cores no matter what.

I'm talking about this: https://ibb.co/tHx8hHy Will it be higher with turbo boost disabled? Or the same? Thanks again and sorry for my ignorance, hehe!

 

[eidairaman1]

I'm talking about this: https://ibb.co/tHx8hHy Will it be higher with turbo boost disabled? Or the same? Thanks again and sorry for my ignorance, hehe!

The same, you just wont have that additional boost unless if you overclock higher than said boost.

 

[kastriot]

Cpu usage will be higher when clock speed is lower and opposite simple eh.

Edit: I forgot to mention this applies only when you play games and gpu has reached bottleneck so faster cpu clock will have lower usage, but if you use rendering, encoding cpu will go always max even if you use 3.4 or 4.2GHz ofc depends on application efficiency to use multithreading effectively,

 

[eidairaman1]

Cpu usage will be higher when clock speed is lower and opposite simple eh.

Still dependent on what software requires.

 

[Leoplate25]

Thanks then! Have a nice day!

 

[AltCapwn]

His question is; does the percentage is based on the clock. So if I use turbo 100% will be based on the max clock with turbo, not on the max stock clock.

 

[John Naylor]

It's essentially a factory overclock .... along with speed step it allows you CPU to go from say 800 Mhz when not doing anything up to it's say arted speed of 3.5 Ghz and the turbo allows 3.9. If ya don't shut these features off it will use only what's needed within those limits.

W/ Tubo Boost off it (using above numbers), your CPU will provide 3.5 GHz... with it On it will go faster up to 3.8 ... if your OC, to whatever setting you were able to manage. Maybe this will help:

https://tpucdn.com/reviews/Intel/Core_i5_9600K/images/relative-performance-games-1280-720.png

In that example, allowing the CPU to use all of its capabilities up to 4.6 Ghz is the baseline of 100% allowing it to go to 4.8 Ghz it gets 0.6% more.... turning off boost would be limiting it to 3.7 might drop ya down to under 98%. There is no possible benefit that i can think of turn off boost.... you are basically underclocking your CPU.

I think you are looking at it wrong .... if you have 2 different CPUs say one that tops out at 3.5 GHz, one at 4.0.0 .... if the load iis big enough, they will both be at 100%. Let me use an analogy... 2 cars line up at the starting line, same car, same engine but one has a turbo ... when the green light pops.... both drivers floor it ..... they both are going 100% as fast as they can, but that's meaninglesss .... the faster car, the one with the turbo, will pass the finish first.

 

[Leoplate25]

It's essentially a factory overclock .... along with speed step it allows you CPU to go from say 800 Mhz when not doing anything up to it's say arted speed of 3.5 Ghz and the turbo allows 3.9. If ya don't shut these features off it will use only what's needed within those limits.

W/ Tubo Boost off it (using above numbers), your CPU will provide 3.5 GHz... with it On it will go faster up to 3.8 ... if your OC, to whatever setting you were able to manage. Maybe this will help:

https://tpucdn.com/reviews/Intel/Core_i5_9600K/images/relative-performance-games-1280-720.png

In that example, allowing the CPU to use all of its capabilities up to 4.6 Ghz is the baseline of 100% allowing it to go to 4.8 Ghz it gets 0.6% more.... turning off boost would be limiting it to 3.7 might drop ya down to under 98%. There is no possible benefit that i can think of turn off boost.... you are basically underclocking your CPU.

I think you are looking at it wrong .... if you have 2 different CPUs say one that tops out at 3.5 GHz, one at 4.0.0 .... if the load iis big enough, they will both be at 100%. Let me use an analogy... 2 cars line up at the starting line, same car, same engine but one has a turbo ... when the green light pops.... both drivers floor it ..... they both are going 100% as fast as they can, but that's meaninglesss .... the faster car, the one with the turbo, will pass the finish first.

Thanks very much for taking your time and answer!

 

[cucker tarlson]

Hi, i have an existencial and silly doubt. If you disable turbo boost; will a game or a program uses more cpu than if you have the turbo on? Or it depends on the core count? Thanks.

faster cpu-lower cpu usage in games.
what might interest you more-even faster ram drops the cpu usage.see yotube comparisons of 2133-2666-3000-3600 memory running games side by side.Faster memory-less cpu usage.
We're talking about uncapped fps scenarios only.

 

[Bill_Bright]

I think you are looking at it wrong .... if you have 2 different CPUs say one that tops out at 3.5 GHz, one at 4.0.0 .... if the load iis big enough, they will both be at 100%. Let me use an analogy... 2 cars line up at the starting line, same car, same engine but one has a turbo ... when the green light pops.... both drivers floor it ..... they both are going 100% as fast as they can, but that's meaninglesss .... the faster car, the one with the turbo, will pass the finish first.

I don't even think this is looking at it right.

Using those same two cars, what is the "work" being done? The "work" is to transport the 160lb driver 1/4 mile down the road. Assuming 1 revolution of the engine rotates the tires the same number of times and moves both cars forwards the same distance, discounting other variables like wind resistance and the power needed to accelerate, it takes the same number of engine revolutions to move that driver to the finish line - thus the same amount of work.

In software, you are just crunching numbers. It is the exact same numbers, regardless how fast they are being crunched. So the CPU is being used the same amount, it is just doing it faster.

Edit comment: Fixed typo.

 

[cucker tarlson]

 

[Leoplate25]

You are a genius! I just did the same and got these results:

Turbo Boost Off @3.7ghz: CPU utilisation 50-56% at 35-38°C aprox, 20w power consumption. RAM 4718mb.
Turbo Boost On @4.3ghz: CPU utilisation 47-51% at 43-49°C aprox, 34w power consumption. RAM 4396mb.

Thanks for taking the time to do this! Appreciate it!

 

[eidairaman1]

You are a genius! I just did the same and got these results:

Turbo Boost Off @3.7ghz: CPU utilisation 50-56% at 35-38°C aprox, 20w power consumption. RAM 4718mb.
Turbo Boost On @4.3ghz: CPU utilisation 47-51% at 43-49°C aprox, 34w power consumption. RAM 4396mb.

Thanks for taking the time to do this! Appreciate it!

probably due to not being capped off at that point

 

[Leoplate25]

probably due to not being capped off at that point

Sorry, i don't understand, i'm kind of a noob, haha!

 

[eidairaman1]

Sorry, i don't understand, i'm kind of a noob, haha!

ok turbo off is capped, turbo on is uncapped

 

[Vya Domus]

Looking at percentages is not a good indicator as to how much your CPU is used in relationship with the clock speed.

Turbo boost disabled = less clock speed = a slower CPU, don't get stuck in useless details.

 

[Leoplate25]

ok turbo off is capped, turbo on is uncapped

Temps are ok with turbo enabled? Running Prime95 26.6v SmallFTTs i got 55 degrees C (room temp 21 degrees C). CPU utilisation in the game is 3-5% lower only with turbo enabled.

Looking at percentages is not a good indicator as to how much your CPU is used in relationship with the clock speed.

Turbo boost disabled = less clock speed = a slower CPU, don't get stuck in useless details.

You are right. I'm kind of a fan of getting the lower temps possible. Thanks!

 

[eidairaman1]

Temps are ok with turbo enabled? Running Prime95 26.6v SmallFTTs i got 55 degrees C (room temp 21 degrees C). CPU utilisation in the game is 3-5% lower only with turbo enabled.


You are right. I'm kind of a fan of getting the lower temps possible. Thanks!

you are fine