 SU.HARDW.PC.CPU (2:5020/299)  SU.HARDW.PC.CPU 
 From : Tema Ershov                         2:5000/7.33     Mon 16 Sep 96 08:22 
 Subj : Pentium FAQ [1/5]                                                       


       PENTIUM(r) PROCESSOR FREQUENTLY ASKED QUESTIONS

URL: http://pentium.intel.com/procs/support/faqs/ppfaqx2.htm
 : 11--96

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Q11: I   would    like    to  know  what  voltage  range  my
     Pentium(r) processor requires. How do I determine this?

         For   newer   Pentium   processors,   the   voltage
     specification can be read directly from the package.
         If  a  processor  package  has this information, it
     will  be  on  the  bottom  side  following  the  s-spec
     marking.  The notation will be a slash mark followed by
     ABC, such as SK110/ABC.

     Here is the decoding of ABC:

     A) S = standard voltage    (3.135 to 3.6V)
        V = VRE voltage         (3.4 to 3.6V)

     B) S = Part has standard timing specifications.
        M = Part has minimum valid MD timing specifications.

     C) S = Part has standard timing specifications
        U = Not tested for  dual-processing  operation,  but
            only for uni-and multi-processing.

         If   your  processor  does  not  have  the  voltage
     markings  directly  on the package (see above), use the
     s-spec  number  to  determine  this.  The  s-spec  is a
     3-digit  number  on the processor package which follows
     SX, SK, SU, SY, or SZ.
         Use  the  s-specs  shown  in the following table to
     find the voltage requirements for your part.


BASIC 75-,90-,100-,133-,150-,166-, AND 200- MHZ
PENTIUM(r) PROCESSOR IDENTIFICATION INFORMATION:

         See  the corresponding Note at the end of the table
     for items listing a number in the "Notes" column.

Type       Model           Mfg.  Core/bus        Notes
     Family     Stepping Stepping  MHz    S-Spec       Comments

  0    5   2       1       B1     90/60   SX879         STD
  0    5   2       1       B1     90/60   SX885         MD
  0    5   2       1       B1     90/60   SX909         VR
  2    5   2       1       B1     90/60   SX874         DP,STD
  0    5   2       1       B1    100/66   SX886         MD
  0    5   2       1       B1    100/66   SX910         VR,MD
  0    5   2       2       B3     75/50   SX951         TCP Mobile
  0    5   2       2       B3     90/60   SX923         STD
  0    5   2       2       B3     90/60   SX922         VR
  0    5   2       2       B3     90/60   SX921         MD
  2    5   2       2       B3     90/60   SX942         DP,STD
  2    5   2       2       B3     90/60   SX943         DP,VR
  2    5   2       2       B3     90/60   SX944         DP,MD
  0    5   2       2       B3     90/60   SZ951   5     STD
  0    5   2       2       B3    100/66   SX960         VRE/MD
  0    5   2       4       B5     75/50   SX975         TCP Mobile
  0,2  5   2       4       B5     75/50   SX961         STD
  0,2  5   2       4       B5     75/50   SZ977   5     STD
  0,2  5   2       4       B5     90/60   SX957         STD
  0,2  5   2       4       B5     90/60   SX958         VR
  0,2  5   2       4       B5     90/60   SX959         MD
  0,2  5   2       4       B5     90/60   SZ978   5     STD
  0,2  5   2       4       B5    100/66   SX962         VRE/MD
  0    5   2       5       C2     75/50   SK079         TCP Mobile
  0,2  5   2       5       C2     75/50   SX969         STD
  0,2  5   2       5       C2     75/50   SX998         MD
  0,2  5   2       5       C2     75/50   SZ994   5     STD
  0,2  5   2       5       C2     75/50   SU070   6     STD
  0,2  5   2       5       C2     90/60   SX968         STD
  0,2  5   2       5       C2     90/60   SZ995   5     STD
  0,2  5   2       5       C2     90/60   SU031   6     STD
  0,2  5   2       5       C2   100/50,66 SX970         VRE/MD
  0,2  5   2       5       C2   100/50,66 SX963         STD
  0,2  5   2       5       C2   100/50,66 SZ996   5     STD
  0,2  5   2       5       C2   100/50,66 SU032   6     STD
  0    5   2       5       C2    120/60   SK086         VRE/MD
  0    5   2       5       C2    120/60   SX994         VRE/MD
  0    5   2       5       C2    120/60   SU033   6     VRE/MD
  0    5   2       5       C2    133/66   SK098         MD
  0    5   2       5      mA1     75/50   SK089   2,4   VRT,TCP
  0    5   2       5      mA1     75/50   SK091   2,4   VRT,SPGA
  0    5   2       5      mA1     90/60   SK090   2,4   VRT,TCP
  0    5   2       5      mA1     90/60   SK092   2,4   VRT,SPGA
  0,2  5   2       B      cB1    120/60   SK110   3,4   STD/no Kit
  0,2  5   2       B      cB1    133/66   SK106   3,4   STD/no Kit
  0,2  5   2       B      cB1    133/66   SK106J  3,4,7 STD/no Kit
  0,2  5   2       B      cB1    133/66   SK107   4     STD
  0,2  5   2       B      cB1    133/66   SU038   3,4,6 STD/no Kit
  0    5   2       B     mcB1    100/66   SY029   2,4   VRT,TCP
  0    5   2       B     mcB1    120/60   SK113   2,4   VRT,TCP
  0    5   2       B     mcB1    120/60   SK118   2,4,7 VRT,TCP
  0    5   2       B     mcB1    120/60   SX999   4     3.3V,SPGA
  0,2  5   2       C      cC0    133/66   SY022   3     STD/No Kit
  0,2  5   2       C      cC0    133/66   SY023         STD
  0,2  5   2       C      cC0    133/66   SU073   3,6   STD/No Kit
  0,2  5   2       C      cC0    150/60   SY015         STD
  0,2  5   2       C      cC0    150/60   SU071   6     STD
  0,2  5   2       C      cC0    166/66   SY016   3     VRE/no kit
  0,2  5   2       C      cC0    166/66   SY017         VRE
  0,2  5   2       C      cC0    166/66   SU072   3,6   VRE/no kit
  0    5   2       C      cC0    166/66   SY037   8,9   VRE,PPGA
  0,2  5   2       C      cC0    200/66   SY044   9     VRE,PPGA
  0    5   2       C      cC0    200/66   SY045   1,9   VRE,PPGA
  0    5   7       0      mA4     75/50   SK119   2,4   VRT,TCP
  0    5   7       0      mA4     75/50   SK122   2,4   VRT,SPGA
  0    5   7       0      mA4     90/60   SK120   2,4   VRT,TCP
  0    5   7       0      mA4     90/60   SK123   2,4   VRT,SPGA
  0    5   7       0      mA4    100/66   SK121   2,4   VRT,TCP
  0    5   7       0      mA4    100/66   SK124   2,4   VRT,SPGA
  0    5   2       C     mcC0    100/66   SY020   2     TCP,VRT
  0    5   2       C     mcC0    100/66   SY046   2     SPGA,3.1V
  0    5   2       C     mcC0    120/60   SY021   2     TCP,VRT
  0    5   2       C     mcC0    120/60   SY027   2     SPGA,3.1V
  0    5   2       C     mcC0    120/60   SY030   2     SPGA,3.3V
  0    5   2       C     mcC0    133/66   SY019   2     TCP,VRT
  0    5   2       C     mcC0    133/66   SY028   2     SPGA,3.1V
  0    5   2       6       E0     75/50   SY009         TCP,Mobile
  0,2  5   2       6       E0     75/50   SY005         STD
  0,2  5   2       6       E0     75/50   SU097   5     STD
  0,2  5   2       6       E0     75/50   SU098   6     STD
  0,2  5   2       6       E0     90/60   SY006         STD
  0,2  5   2       6       E0    100/66   SY007         STD
  0,2  5   2       6       E0    100/66   SU110   5     STD
  0,2  5   2       6       E0    100/66   SU099   6     STD
  0,2  5   2       6       E0    120/60   SY033         STD
  0,2  5   2       6       E0    120/60   SU100   6     STD


NOTES:
     -   Where  values  of  Type, Family, Model and Stepping
     correspond  to the following bits of EDX register after
     RESET  and  the same bits of the EAX register after the
     CPUID  instruction  is  executed (this  is  shown  as 2
     different  values  based on the operation of the device
     as the primary processor or the dual processor upgrade):

         Value      Bits
       Type       [13:12]
       Family     [11:8]
       Model      [7:4]
       Stepping   [3:0]

     -   For  a  definition of STD, VR, VRE, MD, VRE/MD, see
     the  answer  to  question  #10  above or refer to Intel
     document 242480.
     -   DP  indicates  that this part can only be used as a
     dual  processor.  CPU Type of "2" or "0 or 2" indicates
     this part supports dual processing.

     1. TCASE = 60'C.
     2. VRT  Intel's  Voltage Reduction Technology:  The VCC
        for  I/O  is 3.3V, but the core VCC, accounting  for
        about  90%  of  power usage, is reduced to  2.9V, to
        reduce power consumption and heating.
     3. No Kit means that part meets the specifications  but
        is   not   tested   to    support   82498/82493  and
        82497/82492 cache timings
     4. STEPPING The cB1 stepping is logically equivalent to
        the  C2-step,  but   on  a  different  manufacturing
        process.  The  mcB1  step is logically equivalent to
        the  cB1  step (except  it does not support DP, APIC
        or FRC).
        The  mcB1, mA1, mA4  and mcC0-steps also use Intel's
        VRT   (Voltage  Reduction  Technology,  see  note  2
        above)  and  are   available  in  the  TCP  and SPGA
        package,  primarily  to support mobile applications.
        All   mobile   steppings  are  distinguished  by  an
        additional "m" prefix, for "mobile".
     5. This  is   a  boxed  Pentium  processor  without the
        attached fan heatsink.
     6. This  is a  boxed Pentium processor with an attached
        fan heatsink.
     7. These parts  do not support boundary scan. S106J was
        previously marked (and is the same as) SK106J.
     8. DP, FRC and APIC features are not supported on these
        parts.
     9. These  parts  are  packaged in  the Plastic Pin Grid
        Array (PPGA) package.  For additional specifications
        of this package, see Intel document 242480.

         For  order  information  on  document  242480,  the
     Pentium(r) processor Specification Update,  please  see
     General Corporate FAQs, question #9.

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