Microsoft KB Archive/154177

= IBM Model 320 Microchannel Does Not Utilize Multiprocessor =

Article ID: 154177

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51

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This article was previously published under Q154177



SUMMARY
When you run 16-bit applications under Windows NT on an IBM Model 320 Microchannel computer with multiple processors, only the first processor is used. This is not true for the EISA version of the IBM Model 320. Because the second processor on MCA computers does not perform, some applications perform more slowly on a dual processor computer of this model than one with a single processor.



MORE INFORMATION
There is a note on the March 1996 Windows NT Hardware Compatibility List concerning the following models:

  IBM PC Server 320 Pentium/90 8640-MXT (2p)  13 IBM PC Server 320 Pentium/90 8640-MYR (2p) 13 IBM PC Server 320 Pentium/90 8640-MYT (2p) 13

The note on these models reads:

  13 Contact the manufacturer for information on running Windows NT on this computer.



STATUS
The IBM Model 320 is manufactured by IBM, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

Additional query words: processor affinity

Keywords: KB154177

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