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Desktop with DVS

DISCUSSION [email protected] 3 participants 4 messages Jun 13, 2004

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#0 lore raw
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This may be off the loop. But does anyone know if there are any desktop computers with dynamic voltage scaling capacity?

For x86{,_64}: AFAIK there are several choices:
- some x86_64 AMD [server] processors and mainboards support voltage scaling,

Quoted 5 lines

That is not reserved to server. Most modern UP desktops shipped with AMD64 do have what is called now 'cool'n quiet' technology, and should be supported by the powernow-k8 driver (you have to be sure that itt's enabled, though. Some northbridges do not allow this unfortunatelly, even though the processor is capable of that)

Please, is possible to know which northbriges-motherboard are supported?

#1 lore raw
Quoted 7 lines · [email protected] wrote:
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This may be off the loop. But does anyone know if there are any desktop computers with dynamic voltage scaling capacity?

For x86{,_64}: AFAIK there are several choices: - some x86_64 AMD [server] processors and mainboards support voltage scaling,

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Quoted 4 lines

That is not reserved to server. Most modern UP desktops shipped with AMD64 do have what is called now 'cool'n quiet' technology, and should be supported by the powernow-k8 driver (you have to be sure that itt's enabled, though.
Some northbridges do not allow this unfortunatelly, even though the processor
is capable of that)

Please, is possible to know which northbriges-motherboard are supported?

Many nForce2-based boards are using a Attansic ATXP1 chip. With this chip it's possible to dynamically change the processor voltage (Epox 8RDA serie: 1.075V - 2.2V).

Other boards:

Abit NF7
Aopen AK79D-400VN
Chaintech CT-7NJ(S,L1)
DFI Infinity NFII Ultra
DFI Lanparty NFII Ultra
Leadtek K7NCR-18D
Shuttle AN35N Ultra
Soltek 75FRN(2)-L

But the nForce2-chipset doesn't support AMD mobile CPUs, so it's maybe not the best for this.

Bye,
Sebastian

#2 lore raw
Quoted 6 lines · Sebastian Witt

Many nForce2-based boards are using a Attansic ATXP1 chip. With this chip it's possible to dynamically change the processor voltage (Epox 8RDA serie: 1.075V - 2.2V).

But the nForce2-chipset doesn't support AMD mobile CPUs, so it's maybe not the best for this.

I'm not sure if it's completely true - browsing different forums on NF2 I find sometimes that people have mobile amd + NF2 in their descriptions so maybe it works.
You would have to search for such people and talk to them about it greetz
Martin

#3 lore raw
Quoted 6 lines · Marcin Ka?uz.a
Quoted 4 lines · Sebastian Witt

Many nForce2-based boards are using a Attansic ATXP1 chip. With this chip it's possible to dynamically change the processor voltage (Epox 8RDA serie: 1.075V - 2.2V).

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But the nForce2-chipset doesn't support AMD mobile CPUs, so it's maybe not the best for this.

I'm not sure if it's completely true - browsing different forums on NF2 I find sometimes that people have mobile amd + NF2 in their descriptions so maybe it works.
You would have to search for such people and talk to them about it

Yes, the CPU works in that boards. But the Mobile function (dynamic FID changing) is not (yet?, it seems this functions are not implemented) available on NF2 chipsets.

Bye,
Sebastian