Question about CPU APM.

[PoisonRaven]

Hello everyone.

Testing some options for my CPU I've found that disabling APM in bios gives me different temperatures.

My max turbo cpu clock speed is 3.9GHz and temperatures are around 40 idle and 50/55 while gaming so I tested with a bit of overclock then increased it to 4.2GHz disabling turbo and APM and now temperatures are around 45 playing games, the same happens with my iGPU, max temperatures gaming are around 30 normally but disabling APM temps are below 20.

I'd like to know if that's just wrong and messing around with APM makes the system show wrong temps or what is happening.

Cheers!.

 

[ShrimpBrime]

Advanced power management is exactly how it sounds. Disabled, the cpu should boost less and use less power.

 

[PoisonRaven]

Advanced power management is exactly how it sounds. Disabled, the cpu should boost less and use less power.

But with APM disabled HWinfo shows that the effective clock is at 4.2GHz and the performance is better but temperatures are lower than before, that's why I'm confused.

 

[ShrimpBrime]

But with APM disabled HWinfo shows that the effective clock is at 4.2GHz and the performance is better but temperatures are lower than before, that's why I'm confused.

If it works for you don't bother to fix it
Better performance with lower temps, take it and run for the hills!
Or I explained it backwards, one of the 3 XD

 

[PoisonRaven]

If it works for you don't bother to fix it
Better performance with lower temps, take it and run for the hills!
Or I explained it backwards, one of the 3 XD

I'm not complaining at all about temperatures , I just want to be sure that it's showing me correct numbers because even if I set exactly the same settings I get a 10/15ºC difference with APM enabled or disabled.

 

[zenlessyank]

Try a couple of different monitoring programs and see if there are any differences.

 

[PoisonRaven]

Try a couple of different monitoring programs and see if there are any differences.

Yep, even the mb sensor in bios shows a huge cpu temperature difference, sometimes more than 20°C lower with APM disabled.

 

[zenlessyank]

I am going to assume you are running the latest BIOS.

 

[PoisonRaven]

I am going to assume you are running the latest BIOS.

Yes, latest bios for my mb (GA-F2A55M-S1).

 

[zenlessyank]

APM is preferable because other devices can communicate and respond and request needs it provides. There is more going on than just CPU things going on.

Advanced Power Management - Glossary

Definition of Advanced Power Management Advanced Power Management (APM) is a technology that enables computer systems to conserve energy by managing power usage, particularly in laptops and notebooks. APM allows the operating system and BIOS to control the power consumption of hardware...

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