Anybody undervolting AMD64?

  • Thread starter Thread starter Gianmaria Fontana di Sacculmino
  • Start date Start date
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Gianmaria Fontana di Sacculmino

I would like to know if there is some experience about underclocking
and undervolting the AMD 64.
 
I would like to know if there is some experience about underclocking
and undervolting the AMD 64.
Click to expand...

That's how AMD Cool 'N Quiet works. Just set your bios to 1 volt for
the cpu and 5 x 200 for the multiplier x fsb.

Bill
 
I would like to know if there is some experience about underclocking
and undervolting the AMD 64.
Click to expand...

Well it should run as low as AMD's CnQ does it, Things might have
changed (my AMD64s are 2+ years and 1+ years old already).

Newcastles 1GHz @ 1.1V
Clawhammers 800MHz @ 1.2V. (or 1.1v I forget

Ed)
 
I'm using CrystalCPUID instead of cool'n'quiet. To change the voltage this
way the voltage has to be set to auto in the bios.

It can act like cool'n'quiet and change the speed and voltage on the fly,
except you pre-set what you want. May be unstable below half-speed (5x for a
10x cpu).

You can freeze each speed/voltage combo and test it well with prime95
torture testing.

My clock is at 240. So mostly my 10x Winchester is running 5x and 1.2 volts
, but when it's utilization hits 80% it goes to 7x and 1.4 volts, and if
that hits 80% it goes to 10x and 1.45 volts.

1.45v is as high as the software can set it, and 2.4g is as high as my cpu
will go at that voltage.

Anyhow, my pc pulls 114w idling and 150 during prime95.


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