Latest LQ Deal: Latest LQ Deals
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 11-07-2005, 05:13 AM   #1
LQ Newbie
Registered: Jul 2003
Location: London
Distribution: Fedora Core 4
Posts: 16

Rep: Reputation: 0
Determining CPU FSB

Hi everyone,

I was wondering if there's a way of detemining a CPU's FSB, without taking the box apart (I think it's stamped onto the top of the chip). I want to swap my work CPU and with my home one, but my home motherboard will only take upto 533mhz and I have a feeling this one is 800mhz.

I've tried cat /proc/cpuinfo which gives me the following, but it's not quite what I'm after.

Oh and I'm on FC4.


p.s. I've had a good look in the bios but it doesn't seem to say there either.

[root@localhost tim]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
stepping : 9
cpu MHz : 2993.306
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 pbe cid xtpr
bogomips : 5990.91

Last edited by blimbo; 11-07-2005 at 05:18 AM.
Old 11-07-2005, 08:18 AM   #2
Senior Member
Registered: Oct 2005
Location: Denver
Distribution: Sabayon 3.5Loop2
Posts: 1,150

Rep: Reputation: 45
Well, it isn't stamped on the chip, at least directly. Sometimes there is a number you can check with Intel or AMD and find out...

But why go that hard method?

There are numerous easy ways:

BIOS POST screen on boot will list the FSB, if it doesn't(which is rare),
you can go into the bios to check the FSB, though it could be set to auto.
Intel and AMD both release tools, as do a hundred other companies to find system information, but the only ones I know for sure are Windows.
So while I can't recommend them, google pulls up these options for linux:
Command line, built into kernel, processor information-
Intel's bootable version of the "Frequency Identification Utility"-
Any of the linux Benchmark tools, including those included with your distro, if your distro didn't, just do a search on the web. They will all show you system info before you run tests.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Determining Number of Physical CPU sagarparadkar Solaris / OpenSolaris 4 01-12-2009 10:08 PM
FSB speed Henry_1 Linux - General 5 09-06-2005 11:08 PM
upping fsb junctionking Linux - Software 0 06-17-2005 02:16 PM
What is FSB? zetsui Linux - Hardware 1 10-22-2003 09:01 PM
fsb question.. Kilka Linux - Hardware 2 09-24-2003 06:10 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 12:20 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration