Re: why cpu MHz in /proc/cpuinfo different from model spec?

On 2008-10-31, Bennett Haselton <bennett@xxxxxxxxxxxxx> wrote:
I lease a couple different dedicated servers with different hardware
specs. As far as I can tell, in /proc/cpuinfo , when it's an Intel
chip, the megahertz given in the model name agrees closely with the
actual value of "cpu MHz" reported:

model name : Intel(R) Celeron(R) CPU 2.80GHz
stepping : 9
cpu MHz : 2800.618
===
model name : Intel(R) Celeron(R) CPU 1.70GHz
stepping : 3
cpu MHz : 1717.057
===
model name : Intel(R) Celeron(R) D CPU 3.33GHz
stepping : 5
cpu MHz : 3330.268

but when it's an AMD chip, the reported cpu MHz is much less:

model name : AMD Athlon(tm) XP 2800+
stepping : 0
cpu MHz : 2125.300
===
model name : AMD Sempron(tm) 2500+
stepping : 1
cpu MHz : 1749.922
===
model name : AMD Sempron(tm) 2200+
stepping : 1
cpu MHz : 1494.263

I think the machines are mostly running CentOS. Has the evil
Microsoft/Intel conspiracy extended to engulf CentOS as well, so that
it's now deliberately reporting AMD chips as slower? :) Or is there a
simpler explanation.

AMD model numbers are higher than the actual clock speed, because AMD
claims that their processors are equivalent to an Intel processor of
that speed.


--
They can't stop us... we're on a mission from God!
-- The Blues Brothers
.

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