Is it possible to modify "Frequency Table Helpers" to let Overclock?

Is it possible to modify "Frequency Table Helpers" to let Overclock?

[Javi]

First of all, hi everybody, it's my first mail to the list :)

I use to have my CPU overclocked and I would like to use dynamic CPU frequency scaling.
I have an AMD64 3400+ (754) which default's  frequency  is 2400Mhz, but I always run it at 2800Mhz.

The problem is that I can't use dynamic CPU frequency scaling because the max abiable speed I can set is 2400Mhz, so I can't overclock :(

# for i in $( ls /sys/devices/system/cpu/cpu0/cpufreq ); do  echo -n $i;  echo -n ": ";  cat $i; done ;
cpuinfo_cur_freq: 2000000
cpuinfo_max_freq: 2400000 
cpuinfo_min_freq: 1000000
scaling_available_frequencies: 2400000 2200000 2000000 1800000 1000000
scaling_available_governors: ondemand userspace
scaling_cur_freq: 2000000
scaling_driver: powernow-k8
scaling_governor: ondemand 
scaling_max_freq: 2400000 
scaling_min_freq: 1000000
scaling_setspeed: 2000000

Is there a way to change "Frequency Table Helpers" to let me overclock?

Thanks in advance.

Javi.

Re: Is it possible to modify "Frequency Table Helpers" to let Overclock?

[Nebojsa Trpkovic]

I guess you overclock by rising the FSB and frequency changes by cpufreq 
are done by changing the multiplier, so you still can overclock your 
Athlon. You'll just set your FSB to 233MHz and run it at 2800MHz, and 
when it's not under load it will run on 1166MHz. Check this with 
/proc/cpuinfo.

Just guessing...



Javi wrote:

>First of all, hi everybody, it's my first mail to the list :)
>
>I use to have my CPU overclocked and I would like to use dynamic CPU frequency scaling.
>I have an AMD64 3400+ (754) which default's  frequency  is 2400Mhz, but I always run it at 2800Mhz.
>
>The problem is that I can't use dynamic CPU frequency scaling because the max abiable speed I can set is 2400Mhz, so I can't overclock :(
>
># for i in $( ls /sys/devices/system/cpu/cpu0/cpufreq ); do  echo -n $i;  echo -n ": ";  cat $i; done ;
>cpuinfo_cur_freq: 2000000
>cpuinfo_max_freq: 2400000 
>cpuinfo_min_freq: 1000000
>scaling_available_frequencies: 2400000 2200000 2000000 1800000 1000000
>scaling_available_governors: ondemand userspace
>scaling_cur_freq: 2000000
>scaling_driver: powernow-k8
>scaling_governor: ondemand 
>scaling_max_freq: 2400000 
>scaling_min_freq: 1000000
>scaling_setspeed: 2000000
>
>Is there a way to change "Frequency Table Helpers" to let me overclock?
>
>Thanks in advance.
>
>Javi.
>
>
>_______________________________________________
>Cpufreq mailing list
>Cpufreq@lists.linux.org.uk
>http://lists.linux.org.uk/mailman/listinfo/cpufreq
>
>  
>

Re: Is it possible to modify "Frequency Table Helpers" to let Overclock?

[Dominik Brodowski]

On Thu, Jan 20, 2005 at 02:34:51AM +0000, Javi wrote:
> First of all, hi everybody, it's my first mail to the list :)
> 
> I use to have my CPU overclocked and I would like to use dynamic CPU frequency scaling.
> I have an AMD64 3400+ (754) which default's  frequency  is 2400Mhz, but I always run it at 2800Mhz.
> 
> The problem is that I can't use dynamic CPU frequency scaling because the max abiable speed I can set is 2400Mhz, so I can't overclock :(

The values reported by cpufreq are the values the CPU is supposed to run
at, that is the hardcoded FSB speed mutliplied by the "multiplier factor".
If you modify the FSB (and not the multiplier), this isn't detectable by
cpufreq. However, if you modify the multiplier, you'd need to override the
PSB or ACPI tables, and the frequency table helpers are the wrong place to
look for that.

	Dominik