Cool 'n Quite

On Sun, 19 Dec 2004 22:59:31 +0100, Bert wrote:

Hi,

I looked what Cool 'n Quite is doing on a Asus A8V with an AMD64 3500+ with
software from www.amd.com called "Powernow! Dashboard".

The processor seems to have only three states:

1) Idle : Voltage 1,1 V - Speed 42%
2) Average : Voltage 1,3 V - Speed 82%
3) High load : Voltage 1,5 V - Speed 100%

Nothing in between, always one of those values.

Is that what Cool 'n Quite is about?

Bert

The CPU speed can be set in 2 MHz increments. My 3400+ goes from 800MHz to
2.2GHz. Setting the explicit clock speed requires the userspace governor
be compiled into the kernel. Changing the clock speed is done by writing
the speed into scaling_setspeed file.

echo Clock speed 2.2GHz
echo userspace /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 2200000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

Bert wrote:

On Sun, 19 Dec 2004 17:15:35 -0500, General Schvantzkoph
wrote:



The CPU speed can be set in 2 MHz increments. My 3400+ goes from 800MHz to
2.2GHz. Setting the explicit clock speed requires the userspace governor
be compiled into the kernel. Changing the clock speed is done by writing
the speed into scaling_setspeed file.

echo Clock speed 2.2GHz
echo userspace /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 2200000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed


Thanx. And now a similar solution for Windows XP?

Bert


The solution for XP has existed for quite a while. I'm using it on my
MSI K8T Neo right now, and have been for almost a year!

So what exactly do you want?

Bert wrote:

On Sun, 19 Dec 2004 18:46:42 -0500, Dee wrote:



The solution for XP has existed for quite a while. I'm using it on my
MSI K8T Neo right now, and have been for almost a year!

So what exactly do you want?



Errrrrrrrrrr.... The solution?


Bert

The solution to what????

Bert wrote:

On Sun, 19 Dec 2004 18:46:42 -0500, Dee wrote:



The solution for XP has existed for quite a while. I'm using it on my
MSI K8T Neo right now, and have been for almost a year!

So what exactly do you want?



Errrrrrrrrrr.... The solution?


Bert

If you're saying you don't have it currently running on your motherboard
and want to know how to do it, my response is R.T.F.M. (Read the
Friggin' Manual)!!!

The answer is on page 5-34. Is this another case of someone either too
lazy, or too stupid, to figure out how to do things themselves and want
someone to hold their hand all the time???

"Dee" wrote
The answer is on page 5-34. Is this another case of someone either too
lazy, or too stupid, to figure out how to do things themselves and want
someone to hold their hand all the time???

You can't hold mine.


--
Ed Light

Smiley :-/
MS Smiley :-\

Send spam to the FTC at

Thanks, robots.

On Sun, 19 Dec 2004 23:27:19 +0100, Bert wrote:

On Sun, 19 Dec 2004 17:15:35 -0500, General Schvantzkoph
wrote:



The CPU speed can be set in 2 MHz increments. My 3400+ goes from 800MHz to
2.2GHz. Setting the explicit clock speed requires the userspace governor
be compiled into the kernel. Changing the clock speed is done by writing
the speed into scaling_setspeed file.

echo Clock speed 2.2GHz
echo userspace /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 2200000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

Thanx. And now a similar solution for Windows XP?

Bert

XP doesn't give you the fine grade control that Linux does but it allows
you to switch between performance and power savings modes which is all
you really need to do. There is a power management control panel that
allows you to switch between various modes.

On Sun, 19 Dec 2004 20:02:08 -0500, General Schvantzkoph wrote:

On Sun, 19 Dec 2004 17:15:35 -0500, General Schvantzkoph
wrote:

The CPU speed can be set in 2 MHz increments. My 3400+ goes from 800MHz to
2.2GHz. Setting the explicit clock speed requires the userspace governor
be compiled into the kernel. Changing the clock speed is done by writing
the speed into scaling_setspeed file.

echo Clock speed 2.2GHz
echo userspace /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 2200000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

XP doesn't give you the fine grade control that Linux does but it allows
you to switch between performance and power savings modes which is all
you really need to do. There is a power management control panel that
allows you to switch between various modes.

How are you getting the clock speed to set in 2MHz increments. While I can
echo any value to scaling_setspeed, it only acts on valid values contained
in the scaling_available_frequencies file, which is limited to 3 speeds on
my system, and I don't see how the change could be less than 200Mhz for
each speed since it changes the multiplier and not the FSB speed There is
no error returned by the command, but nothing changes unless a valid value
is entered. i'd be interested in seeing just what is read from your bios.
In my dmesg;

powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09b)
powernow-k8: 0 : fid 0xc (2000 MHz), vid 0x2 (1500 mV)
powernow-k8: 1 : fid 0xa (1800 MHz), vid 0x6 (1400 mV)
powernow-k8: 2 : fid 0x0 (800 MHz), vid 0xa (1300 mV)
powernow-k8: cpu_init done, current fid 0xc, vid 0x2

--
Abit KT7-Raid (KT133) Tbred B core CPU @2400MHz (24x100FSB)
http://mysite.verizon.net/res0exft/cpu.htm

On Mon, 20 Dec 2004 10:39:08 +0000, Wes Newell wrote:

On Sun, 19 Dec 2004 20:02:08 -0500, General Schvantzkoph wrote:

On Sun, 19 Dec 2004 17:15:35 -0500, General Schvantzkoph
wrote:

The CPU speed can be set in 2 MHz increments. My 3400+ goes from 800MHz to
2.2GHz. Setting the explicit clock speed requires the userspace governor
be compiled into the kernel. Changing the clock speed is done by writing
the speed into scaling_setspeed file.

echo Clock speed 2.2GHz
echo userspace /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 2200000 /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

XP doesn't give you the fine grade control that Linux does but it allows
you to switch between performance and power savings modes which is all
you really need to do. There is a power management control panel that
allows you to switch between various modes.

How are you getting the clock speed to set in 2MHz increments. While I can
echo any value to scaling_setspeed, it only acts on valid values contained
in the scaling_available_frequencies file, which is limited to 3 speeds on
my system, and I don't see how the change could be less than 200Mhz for
each speed since it changes the multiplier and not the FSB speed There is
no error returned by the command, but nothing changes unless a valid value
is entered. i'd be interested in seeing just what is read from your bios.
In my dmesg;

powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09b)
powernow-k8: 0 : fid 0xc (2000 MHz), vid 0x2 (1500 mV)
powernow-k8: 1 : fid 0xa (1800 MHz), vid 0x6 (1400 mV)
powernow-k8: 2 : fid 0x0 (800 MHz), vid 0xa (1300 mV)
powernow-k8: cpu_init done, current fid 0xc, vid 0x2

Sorry I meant 200MHz increments, not 2Mhz. It's a function of my age that
I think in such small increments. Looking at the
scaling_available_frequencies file under 2.6.9 I see you are right, there
are only three frequencies, I seem to remember more under 2.6.8.1. but I'm
probably wrong. There really isn't any reason to use a lot of different
frequences, slow, med and fast is enough.

Bert wrote:

On Sun, 19 Dec 2004 20:02:08 -0500, General Schvantzkoph
wrote:



XP doesn't give you the fine grade control that Linux does but it allows
you to switch between performance and power savings modes which is all
you really need to do. There is a power management control panel that
allows you to switch between various modes.


That is what my question was about.
Under XP C&Q knows only three states and obviously can't be refined.
That is no drama, just wanted to know.


Thnx!

Bert


The PowerNow Dashboard is not an implementation of Cool-n-Quiet. It's
just a display of what's going on. Using CoreCenter with a MSI board
displays the same info as Dashboard and there are definitely more than
three states. I can watch both the HT speed and the multiplier change,
depending on the load, and the resulting cpu frequency.

Bert wrote:
On Mon, 20 Dec 2004 12:33:40 -0500, Dee wrote:



The PowerNow Dashboard is not an implementation of Cool-n-Quiet. It's
just a display of what's going on. Using CoreCenter with a MSI board
displays the same info as Dashboard and there are definitely more than
three states. I can watch both the HT speed and the multiplier change,
depending on the load, and the resulting cpu frequency.


Makes me wonder what is really going on.
Is it Powernow! Dashboard which can only show three states, or is
C&Q better implemented on MSI boards? (I'm using an Asus A8V)

Bert



I would think the Cool-n-Quiet should pretty much function the same on
all boards. I know that in 32-bit Windows XP you have to install the
amdk8.sys CPU driver, along with C-n-Q being enabled in the BIOS and the
Minimal Power Management setting, for the variable cpu, and cpu fan,
speed. Originally some of BIOSes did not have C-n-Q implemented.

I think I stated before that x64 has the appropriate cpu driver as part
of its base.

MSI indicates that the C-n-Q feature is also implemented on Intel boards.