Adding a second processor and RAM

Sean McAvoy sean.mcavoy at megawheels.com
Fri Nov 1 14:22:01 CST 2002


What about the RAM, does that need to be added in groups of two?


On Fri, 2002-11-01 at 14:24, Joshua_Giles at dell.com wrote:
> bhussain>>As for the CPU, if you do "cat /proc/cpuinfo" on each server and
> make sure
> bhussain>>all the info is the same, then you should have no trouble with
> bhussain>>compatibility.
> 
> FYI.
> Most newer bioses can handle the situation of two CPU's with different
> speeds.  The PowerEdge 2650(for example); is equipped with a bios that does
> just that.
> 
> 
> 
> Joshua Giles
> 
> 
> 
> -----Original Message-----
> From: Basil Hussain [mailto:basil.hussain at kodakweddings.com]
> Sent: Friday, November 01, 2002 5:32 AM
> To: Sean McAvoy; Linux PowerEdge Mailing List
> Subject: RE: Adding a second processor and RAM
> 
> 
> Hi,
> 
> > I hope this isn't *to* off topic. I've got a 1550 with dual processors
> > (PIII 1ghz) and 2x512mb RAM. I've got a 2550 with 1 processor (PIII
> > 1ghz) and 1gb RAM. I want to move 1 of the processors from the 1550 and
> > all of it's ram to the 2550, I know with SMP you need to have processors
> > the same speed, but I've also heard that there are other requirements
> > (cache/voltage I guess?). If this is True, how can I find out the needed
> > info under Linux. And a really off topic question: Will the RAM from a
> > 1550 just pop into a 2550 (same bus speed?). Thanks.
> 
> If the 2550 uses the same chipset as the 2500, then I believe you can use
> the same RAM. I have myself stolen RAM from one of our own 1550s and put it
> in a 2500! :-) Make sure you transfer the RAM in pairs, as both the 1550 and
> 2500 use interleaving.
> 
> As for the CPU, if you do "cat /proc/cpuinfo" on each server and make sure
> all the info is the same, then you should have no trouble with
> compatibility. Just for reference, here is the info for one of the CPUs in
> one of my own 1550 1GHz servers:
> 
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 8
> model name      : Pentium III (Coppermine)
> stepping        : 6
> cpu MHz         : 993.382
> cache size      : 256 KB
> fdiv_bug        : no
> hlt_bug         : no
> sep_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 sep mtrr pge mca
> cmov pat pse36 mmx fxsr xmm
> bogomips        : 1985.74
> 
> One other issue that just crossed my mind is that of CPU heatsinks. I cannot
> remember what the heatsinks are like in the 1550, but you should make sure
> that it physically fits in with whatever cooling system is used in the 2550.
> 
> Regards,
> 
> Basil Hussain
> ---------------------------------------
> Internet Developer, Kodak Weddings
> E-Mail: basil.hussain at kodakweddings.com
> 
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-- 
Sean McAvoy
Network Analyst
Megawheels Technologies Inc.
Phone: 416.360.8211
Fax:   416.360.1403
Cell:  416.616.6599
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