6700HQ won't reach turbo speed :(

[Wizerbwski]

Hello TH Community,

I am looking for some help to help solve my problem with my Lenovo Y700 17" Laptop.

Specs:
6700HQ CPU (stock speeds / settings)
16GB 2100Mhz RAM
1TB 850 pro
256GB Samsung M.2 Boot drive
GTX 960M GPU
Windows 10 Home 64bit


The issue:
When running various CPU benchmarks, CPUz shows the CPU reached 100% load but the CPU will only ever reach 3.1GHz. This CPU has a turbo speed of 3.5GHz.

I am a bit stuck.... can anyone explain why my New laptop will not turbo correctly? I feel as if I've been cheated out of performance and that there may still be a few performance gains to have...

I have tried BIOS update, but the official latest Lenovo BIOS update installer is saying its not compatible with my current machine - yes I have double checked the file I downloaded was for my exacxt machine (including the 17" version)

Any help / advice is most welcome.

Thanks!

 

[ingtar33]

1) if its not plugged in it won't turbo
2) check the power settings. any type of "power saving" setting turned on and it won't turbo
3) make sure it's not in airplane or "quiet hours" mode, either of those will prevent it from turboing
4) if the laptop is overheating it won't turbo
5) turbo is variable on intel cpus, it will hit the "max" turbo on 1 core only. any stress test that hits all cores will prevent the turbo from reaching the max clock

start with this stuff.

 

[st3v30]

6700HQ turbo steps:

4 cores: max. 3.1 GHz, 2 cores: max. 3.3 GHz, 1 core: max. 3.5 GHz

You will never get 3.5 on all 4 cores, this is just how Intel made it work.

 

[Wizerbwski]

Thanks for clearing that up,

I have checked all of the above, including a good look through windows power manager and the Lenovo power management suite, can't find anything to suggest under throttling.

I will reach 3.1 Ghz as you said, on 4 cores. Would it be usual to see if the CPU did indeed reach 3.3 and 3.5 Ghz respectively using only one core?

Whats the best way of accomplishing this?

Thanks for your help

 

[burbee]

Thanks for clearing that up,

I have checked all of the above, including a good look through windows power manager and the Lenovo power management suite, can't find anything to suggest under throttling.

I will reach 3.1 Ghz as you said, on 4 cores. Would it be usual to see if the CPU did indeed reach 3.3 and 3.5 Ghz respectively using only one core?

Whats the best way of accomplishing this?

Thanks for your help

Find an application that benchmarks 1/2 cores only, it will probably happen when the cpu is not 100%, but I am not sure..

 

[ingtar33]

Thanks for clearing that up,

I have checked all of the above, including a good look through windows power manager and the Lenovo power management suite, can't find anything to suggest under throttling.

I will reach 3.1 Ghz as you said, on 4 cores. Would it be usual to see if the CPU did indeed reach 3.3 and 3.5 Ghz respectively using only one core?

Whats the best way of accomplishing this?

Thanks for your help

you can run prime95 on any number of cores you specify. one if you want. However be careful with prime95, it's a very harsh stressing tool, and sometimes laptop cooling solutions aren't able to keep the cpu at a safe temp when running it.

 

[Wizerbwski]

Thanks for clearing that up,

I have checked all of the above, including a good look through windows power manager and the Lenovo power management suite, can't find anything to suggest under throttling.

I will reach 3.1 Ghz as you said, on 4 cores. Would it be usual to see if the CPU did indeed reach 3.3 and 3.5 Ghz respectively using only one core?

Whats the best way of accomplishing this?

Thanks for your help

you can run prime95 on any number of cores you specify. one if you want. However be careful with prime95, it's a very harsh stressing tool, and sometimes laptop cooling solutions aren't able to keep the cpu at a safe temp when running it.

Thanks ingtar33, I'll give it a shot