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KKappa

8750H, idle power consumption

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Posted · Original PosterOP

Hi, if you have a laptop with 8750h, could you tell me whats it's  package power when idle, with dedicated GPU on and off?

 

 

Today i've noticed that my CPU draws around 12W when it's idle, GT and IA cores draw less than a watt, but total package power is as i said, 12W. When GTX is off, the CPU draws only 0.5-0.8W.

This affects CB score, when GPU is off, i can get as high as 1293 and CPU stays at 3.9GHz for the entire benchmark, with GPU on i get only like 1230.

 

Asking because recently i totally disassembled my laptop, also was overclocking my 1070 (achieved 20k graphics in fire strike and it's stable :)) and i don't know if it's normal or i screwed up something. I did not notice such behavior in this(i own it for like 7 months) or my last laptop (6700HQ+960M). Maybe i noticed it now because now msi afterburner keeps my gpu on all the time.

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What model?

12 hours ago, KKappa said:

with dedicated GPU on and off?

May I know how do you test this? Some apps will draw more power even though dGPU is not used

12 hours ago, KKappa said:

This affects CB score, when GPU is off, i can get as high as 1293 and CPU stays at 3.9GHz for the entire benchmark, with GPU on i get only like 1230.

This is entirely different scenario


Feel free to ask for recommendations if you're looking for a new lappy!

 

My daily driver: Lenovo Legion Y530 [REVIEW]

 

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Posted · Original PosterOP
10 hours ago, GeneXiS_X said:

What model?

May I know how do you test this? Some apps will draw more power even though dGPU is not used

This is entirely different scenario

MSI GE73-8RF

I know easily whether geforce is on because this laptop changes power led color from white to amber. But you can check it in for example hwinfo too. When dgpu is off its clocks, temperature, basically all sensors will be read as 0.

This power draw doesn't come from apps, i can have <2% cpu utilization and 12W power, when the gpu shuts down, it falls down to 0.6W

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5 hours ago, KKappa said:

I know easily whether geforce is on because this laptop changes power led color from white to amber. But you can check it in for example hwinfo too. When dgpu is off its clocks, temperature, basically all sensors will be read as 0.

That is Optimus. dGPU not in use


Feel free to ask for recommendations if you're looking for a new lappy!

 

My daily driver: Lenovo Legion Y530 [REVIEW]

 

Laptop Reviews:

Specs of my Y530:

Spoiler

Intel Core i5-8300H Nvidia GTX1050TI 2GB LP156WFG-SPB2 144Hz IPS 16GB 2666MHZ DDR4 RAM (2x8GB) Samsung PM981 256GB NVMe SSD+Seagate ST1000LM035 1TB 5400RPM HDD (spare)

My Phone: Xiaomi Redmi Note 4 (Snapdragon 625, 3GB RAM, 32GB ROM)

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I have exactly the same issue with my MSI GE63 8rf. I have unlocked the bios but still wasnt able to solve this stupid issue. I have found out, that the "uncore power" gets high always after waking the notebook from standby. After a restart it turns back to normal and runs at about 1w idle.

And it is not a false reading, i measured the power consumption external. Somehow this issue doesnt appear when u r using hibernation instead of standby. So it is 100% related to standby.

What i also have noticed is, when you r using hwmonitor the "uncore power" stays always at about 12w, no matter you restarted your pc or not. I assume thats because "hwmonitor" wakes the gpu as long as it runs (Nvidia Optimus). Dont know why this effects the "uncore power". This doesnt happen with "Hwinfo".

 

in my case the idle power stays at 12w no matter the gpu is on or off (Nvidia Optimus)

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