LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - General
User Name
Password
Linux - General This Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.

Notices


Reply
  Search this Thread
Old 01-28-2003, 08:51 AM   #1
Cyth
Member
 
Registered: Mar 2001
Location: Sweden, Lund
Distribution: Slackware
Posts: 68

Rep: Reputation: 15
Linux and AMD SMP


Hi all,

I'm considering buying a AMD dual system since the increased performance and the possibility to 'grow' appeals me.

But, there's some issues I need to take care of:

1. Will it run with only one CPU? At first, perhaps I'll only buy one.

2. Does the CPU's have to be running the same clock frequenzy?

3. What effect whould the PSU have? Is it enough with 300W for a two CPU's a harddrive, cd-burner and cd-rom? (quite normal computer except being dual)

4. Why should I buy Intel/AMD?

5. Any mobo manufacter you recommend, any product I should stay away from etc..?


Is there something else I should think of when buying mobo/CPU at these days(what cpu family ex.); What frequenxy on the memory bus should I choose?

Any suggestion; ideas are highly appreciated.

cheers,
Cyth
 
Old 01-28-2003, 09:48 AM   #2
Darin
Senior Member
 
Registered: Jan 2003
Location: Portland, OR USA
Distribution: Slackware, SLAX, Gentoo, RH/Fedora
Posts: 1,024

Rep: Reputation: 45
random SMP info in no particular order...

Many motherboards have a capacitor pack called a VRM that you need to install along with processor number two, some have it already onboard.

Any dual proc mobo will run with only one CPU installed.

The procs have to be the same speed and in some cases the same "stepping" which means if you don't buy the CPUs at the same time it is possible they won't work together.

Intel = experience in SMP, AMD = better price, that's as simple as I can put it without starting a CPU war in this thread.

Power isn't that much of a concern over a single CPU board as these days the biggest draw is from components (hdd, cd/dvd, etc) but still the bigger the better and you will probably need a new PSU for a modern board since older ones don't have the "p4" plug so if you buy a new one I'd say minimum 400w for even single proc.

Couldn't tell you brands, the only SMP boards I have experience with are Intel server boards and they rock.

two 1GHz CPUs < one 2GHz CPU.

I was reading somewhere that at the current processor speeds it's usually other components like mobo, bus speeds, PCI bus, IDE bus etc that are the limiting speed factors. If this is even partially true then dual CPUs won't be as satisfying as you expect.

Your OS has to be good at SMP and preferrably so to with the applications you run. Linux has that down fairly well and actually scales better than winblowz in SMP functionality but still not as good as commercial unices like Solaris (must be nice when the CPU company makes the OS too.)
 
Old 01-28-2003, 12:30 PM   #3
Cyth
Member
 
Registered: Mar 2001
Location: Sweden, Lund
Distribution: Slackware
Posts: 68

Original Poster
Rep: Reputation: 15
AMD SMP MP or XP

Hi all,

Can I use AMD's XP processors in a dual mobo? What is the effects? If it's possible, what should I notice?

Does it place a bigger load on the memory?

cheers,
Cyth
 
Old 01-28-2003, 12:35 PM   #4
trickykid
LQ Guru
 
Registered: Jan 2001
Posts: 24,149

Rep: Reputation: 235Reputation: 235Reputation: 235
I merged your existing thread with your new one, to prevent confusion and no need to start a new thread for same subject.
 
Old 01-28-2003, 01:32 PM   #5
Cyth
Member
 
Registered: Mar 2001
Location: Sweden, Lund
Distribution: Slackware
Posts: 68

Original Poster
Rep: Reputation: 15
Ups, I hope you excuse my silly mistake..

cheers,
Cyth
 
Old 01-28-2003, 07:12 PM   #6
nxny
Member
 
Registered: May 2002
Location: AK - The last frontier.
Distribution: Red Hat 8.0, Slackware 8.1, Knoppix 3.7, Lunar 1.3, Sorcerer
Posts: 771

Rep: Reputation: 30
Re: AMD SMP MP or XP

Quote:
Originally posted by Cyth
Hi all,

Can I use AMD's XP processors in a dual mobo? What is the effects? If it's possible, what should I notice?

Does it place a bigger load on the memory?

cheers,
Cyth
the XPs offer the same performance and are almost identical to as MPs, but the MPs are much more thoroughly tested in an multiprocessing environment. If you use XPs in a dual MP mobo, they'll probably run just as fine as MPs, but no guarantees there.

Memory consumption should stay the same.
 
  


Reply


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 On
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Any reason to keep a non-smp kernel installed on a smp FC3 machine? jim-j Fedora 2 03-12-2006 08:06 AM
AMD Opteron or AMD 64 dual core difference? GATTACA Linux - Hardware 1 10-22-2005 10:46 PM
Help - SMP Kernel fails for Suse 9.2 and 9.2 AMD 4400+ lostowl SUSE / openSUSE 2 08-05-2005 08:05 AM
SMP help alibloke Linux - Hardware 0 06-29-2004 05:21 AM
AMD 64 bit vs Dual AMD MP 2400+ GATTACA Linux - Hardware 2 06-02-2004 05:54 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - General

All times are GMT -5. The time now is 08:27 PM.

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