Intel CPU TDP-Up / TDP-Down

[Phishfry]

I am looking at an Pico-ITX board and the soldered on processor seems to have a wide range of TDP.

Are these BIOS functions or Operating System functions? How do I control TDP-Down for low power 7.5W TDP mode?

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Pico510 This is the Gen7 refresh. No good pics of Pico500.

 

[cy@]

You can probably only manage this through your BIOS. Older processes would work with powerd. Newer processors manage stepping clock rate themselves. You need to enable/disable the BIOS setting.

I've disabled it with my i7-8650U. Laptops don't handle heat that well. Running it cooler reduces fan wear -- as I've replaced a laptop radiator fan once on another laptop already.

 

[Erichans]

I guess this is the one you have in mind: specs at Axiomtek PICO500 PICO ITX

No good pics of Pico500.

Looks like it is officially been discontinued. However, you may be able to get it though.
I'm not familiar with these type of boards, however, as mentioned there maybe be (BIOS) settings offered that enable the low TDP desired.

 

[Phishfry]

The PCEngines APU2/3/4 had a sysctl you could downclock to something like 800mhz.
dev.cpu.0.freq=800
That was the last time I messed with the clock settings.
But that was probably not a ACPI system. I think that has a bearing on cpufreq(4).

I remember one of my NUC's had TDP-x. I passed it on already.