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Old 03-10-2010, 07:07 PM   #1
TB303
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CPU question


Hello all. I just learned to cat out my /proc/cpuinfo file and can see that it says each of my quad core speeds in 900.000 MHz. But to my understanding, since I have a AMD Phenom(tm) 9100e Quad-Core Processor, shouldn't this read at 1800.000 MHz? If this is incorrect, am I running at half the speed? thanks.
 
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Old 03-10-2010, 07:32 PM   #2
neonsignal
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This just shows the current CPU speed, not the maximum. It may be stepped down because the load is light (or throttled because it is overheating!).
 
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Old 03-10-2010, 07:40 PM   #3
jens
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Run (as root):
Code:
dmidecode -t processor
This should tell your maximum speed as well.
 
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Old 03-10-2010, 08:12 PM   #4
TB303
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Quote:
Originally Posted by jens View Post
Run (as root):
Code:
dmidecode -t processor
This should tell your maximum speed as well.
Thanks for the help. The results show:
Version: AMD Phenom(tm) 9100e Quad-Core Processor
Voltage: 1.5 V
External Clock: 200 MHz
Max Speed: 2800 MHz
Current Speed: 1800 MHz

Just a thought, does 2800 MHz mean that I could get more out of this processor? I was told that it was disabled by the manufacturer to ever do so.
 
Old 03-10-2010, 09:02 PM   #5
smoker
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Should have bought the Black edition !
 
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Old 03-10-2010, 11:02 PM   #6
Smartpatrol
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...

Last edited by Smartpatrol; 03-11-2010 at 11:11 PM.
 
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Old 03-11-2010, 04:23 AM   #7
jens
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Quote:
Originally Posted by TB303 View Post

Just a thought, does 2800 that I could get more out of this processor? I was told that it was disabled by the manufacturer to ever do so.
Yes, ... but that doesn't guarantee it's doable (and safe!) on your system.
If all options are disabled in the bios, most clocking software can't just circumvent them either.

This is mostly done with cheaper "all-in-one" hardware (dell and friends). Raising your cpu speed is only possible if every other component in your system is capable of doing this.

PS: Don't just do whatever you read without proper research, it could harm/destabilize your system.

EDIT: ...you might get more and better information from forums like these:
http://www.overclockers.com/
http://www.overclock.net/

Last edited by jens; 03-11-2010 at 05:06 AM.
 
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Old 03-11-2010, 06:06 AM   #8
masterclassic
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... and in any case it is safer to proceed by small steps.
Overclocking needs more efficient fans, and much more experience, of course, to be able to detect what is going wrong and why.
 
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Old 03-11-2010, 07:38 AM   #9
thorkelljarl
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Smartpatrol...

linux has scaled the frequency of the CPU according to demand. As has been mentioned, the demand profile can be managed with the cpufrequtils package.

Even if you overclock your CPU, you may find that it is throttled by linux as part of a power save function.

On that big rig of yours, you can floor the peddle if you want, but you can't get around the speed governor.

http://www.thinkwiki.org/wiki/How_to_use_cpufrequtils
 
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