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Palhoto
Tux's lil' helper
Joined: 27 Feb 2003
Posts: 111
Location: Iberian Peninsula
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 Posted: Thu Oct 08, 2009 8:29 am Post subject: Speedstep on a Pentium 3 500Mhz Coppermine |
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Hi,
Is it possible to Speedstep a Pentium 3 500Mhz Coppermine in Linux?
In Windows it is easy to throttle the CPU frequency with a function key combination (three possible states).
http://www.thinkwiki.org/wiki/Intel_Mobile_Pentium_III says the Coppermine 500MHz CPU doesn't have speedstep.
# cat /proc/cpuinfo | Code: | processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 3
cpu MHz : 497.555
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse up
bogomips : 995.57
clflush size : 32
power management: |
Notice that stepping is in state '3'. Is it another stepping technology (not speedstep)?
# modprobe speedstep-smi | Code: | | FATAL: Error inserting speedstep_smi (/lib/modules/2.6.27-gentoo-r10/kernel/arch/x86/kernel/cpu/cpufreq/speedstep-smi.ko): No such device |
Any ideas?
Thank you. |
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Veldrin
Veteran
Joined: 27 Jul 2004
Posts: 1945
Location: Zurich, Switzerland
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| Posted: Thu Oct 08, 2009 9:19 am Post subject: |
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| Quote: | | Notice that stepping is in state '3'. Is it another stepping technology (not speedstep)? |
Stepping has noting to do with Clock change. It is simply a way to classify CPUs, in conjunction with family and model.
And if they say, that this kind of Pentium III does not have Speedstep, then they are normally right (I am currently looking for a confirmation)
cheers
V. |
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Palhoto
Tux's lil' helper
Joined: 27 Feb 2003
Posts: 111
Location: Iberian Peninsula
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| Posted: Fri Oct 09, 2009 8:58 am Post subject: |
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| Veldrin wrote: | | Quote: | | Notice that stepping is in state '3'. Is it another stepping technology (not speedstep)? |
Stepping has noting to do with Clock change. It is simply a way to classify CPUs, in conjunction with family and model. |
Veldrin, thank you for the clarification.
| Veldrin wrote: | | And if they say, that this kind of Pentium III does not have Speedstep, then they are normally right (I am currently looking for a confirmation) |
Thanks. |
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