Translating CPU flags

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Translating CPU flags

Postby paulm » Sat Jul 17, 2010 3:19 pm

I have a small problem. I need to find out if the CPU in a box supports SpeedStep. This is a box that I have no physical access to (at least not in the near future...). Running 'cat /proc/cpuinfo gets me the following data:

Code: Select all
[root@goldie ~]# cat /proc/cpuinfo
processor   : 0
vendor_id   : GenuineIntel
cpu family   : 15
model      : 2
model name   : Intel(R) Pentium(R) 4 CPU 2.00GHz
stepping   : 4
cpu MHz      : 1995.516
cache size   : 512 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 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips   : 3993.06

Which tells me its an Intel, and tells me its not real fast. But I have no idea about the flags, which I hope would tell me whether the CPU does support throttling.

Does anyone know where I can get either a better way of retrieving the needed info, or a translation table for the flags data?

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Postby PCNetSpec » Sat Jul 17, 2010 3:49 pm

Here you go:

As the EIST/EST flags are missing, I'm guessing the answer is NO speedstep isn't supported on this CPU, and AFAIK speedstep was only available on P4-M (mobile) CPU's, as far as the Pentium 4 family was concerned.

See "Versions" info here:
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Postby paulm » Sat Jul 17, 2010 4:14 pm

:( Looks like it. Never mind, maybe I can sell them a hardware upgrade. :wink:

Thanks for the links - useful in any event and nice to know for future reference.

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