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SAM23

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19 years ago

S

SAM23

1 Message

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3761

November 12th, 2007 03:00

Cannot get the bios (A12) to recognize 2nd CPU

I have   a problem with my 1600sc. I have  Xeons 533 fsb. I have two identical SC1600. I pulled one CPU from one machine and added to the other.
 
 I cannot get the bios (A12) to recognize the 2nd CPU.  In Windows device manager I can see the secound CPU (Show as working properly).
 
 
Has anyone else had these  problems?   
 
  • 277

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    Posted November 12th, 2007 17:00

    Sam23,
     
    I have not seen any issues with this.  Was the processor working in the other system?  What exactly do you see listed in the BIOS?  Are you sure Windows sees the 2nd processor and it is not seeing the first processor hyper-threaded?  Was anything else added/changed/updated?
  • speedstep

    11 Legend

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    46969 Posts

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    Posted November 15th, 2007 14:00

    Does the motherboard need a VRM as well as a processor? I dont think it does as I recall the VRM is built onto the motherboard.

    However the "S" spec must be within the range that the bios supports.

    Mixing different steppings is not recommeded.



    What are the S spec for each CPU?
  • Kojak

    10 Posts

    277

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    Posted November 22nd, 2007 12:00

    I am experiencing a similar issue with the second cpu being recognized as a 2.6 vs a 2.4/533fsb.  Same issue existed with older bios a08 and newly flashed bios a12.  This is pertaining to a 1600sc with factory hardware.


    Message Edited by Kojak on 11-22-2007 09:34 AM
  • universal4

    1 Rookie

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    59 Posts

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    Posted June 13th, 2008 21:00

    I recently saw this on a PE1750.

     

    I had moved a drive running Windows 2008 from a dual 2.4 to a dual 2.8 for testing purposes. The bios was seeing the cpu's correctly, but windows saw it as one 2.4 and one 2.8 (actually 2 of eac)

     

    I went into the device manager, uninstalled both 2.4's and renbooted and now windows ees them all as 2.8's

     

    Rick