RightMark CPU Clock Utility (RMClock)

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Preporuka za sve visejezgarne procesore, kao i za sve laptopove. Pravilnim podesavanjem ce vam se CPU manje grejati, manje struje trositi. Odatle proistice dodatno vreme na laptopu prilikom rada na baterije. Postoji i monitoring modul unutar aplikacije, koji je prilicno precizan (licno sam vrsio poredjenje sa CoreTemp). Probajte, ja ga koristim i Q6600 G0 mi je hladniji za 10-tak stepeni i radi na voltazi manjoj od 1.2875V overklokovan na 3.0ghz.

Homepage,

http://cpu.rightmark.org/products/rmclock.shtml



Postoje odlicna uputstva za undervolt-ovanje, koriscenjem ovog programa.

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Ali vidi baš sam skoro oko te problematike lupao glavu.
Doduše na intelu . Nije bitan sam podešen takt , tako se ispostavilo
(undervoltovanje uvek radi , ali savremeni cpu to već imaju
tu tehnologiju u njima koja transparentno radi bez da javlja nekoj spoljnoj aplikaciji )

Rezultat kod mene na celeronu core2 je da na taktu 2100Mhz
kao i na taktu 1200Mhz se isto greje pri IDLE
(a to menjanje? ide na komplikovane načine preko takozvanih C-stanja i P-stanja procesora
ali ne mogu da pohvatam tačno ko tu šta menja znam da je bitan funkcionalan ACPI )

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Citat:Processor states

The CPU power states C0-C3 are defined as follows:

* C0 is the operating state.
* C1 (often known as Halt) is a state where the processor is not executing instructions, but can return to an executing state essentially instantaneously. All ACPI-conformant processors must support this power state. Some processors, such as the Pentium 4, also support an Enhanced C1 state (C1E or Enhanced Halt State) for lower power consumption,[7].
* C2 (often known as Stop-Clock) is a state where the processor maintains all software-visible state, but may take longer to wake up. This processor state is optional.
* C3 (often known as Sleep) is a state where the processor does not need to keep its cache coherent, but maintains other state. Some processors have variations on the C3 state (Deep Sleep, Deeper Sleep, etc.) that differ in how long it takes to wake the processor. This processor state is optional.

Performance states

While a device or processor operates (D0 and C0, respectively), it can be in one of several power-performance states. These states are implementation-dependent, but P0 is always the highest-performance state, with P1 to Pn being successively lower-performance states, up to an implementation-specific limit of n no greater than 16.

P-states have become known as SpeedStep in Intel processors, as PowerNow! or Cool'n'Quiet in AMD processors, and as PowerSaver in VIA processors.

* P0 max power and frequency
* P1 less than P0, voltage/frequency scaled
* Pn less than P(n-1), voltage/frequency scaled


http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface

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Napisano: 21 Jun 2010 12:21

e da to su ta stanja hvala

Dopuna: 21 Jun 2010 12:54

@higuy , a proveri ovde šta kažu

Race to Idle
http://www.lesswatts.org/projects/applications-power-management/race-to-idle.php

odprilike da kada CPU radi na većem taktu on odradi neki posao za
kraće vreme i više vremena provede pod IDLE režimom i onda se manje greje (na većem taktu)

(odnosno kada i ako i idle režimu mu se uključuje taj interni powersavings )
Citat:
It's generally better to run as fast as you can so that you can be idle longer.

a ovde je za C-stanja nešto dodatno objašnjeno
http://www.lesswatts.org/documentation/silicon-power-mgmnt/