Intel Xeon Processor MP Specification Update
12 Intel
® 
Xeon
® 
 Processor MP Specification Update
Mixed Steppings In MP Systems
NOTES:
1. Some of these processors are affected by errata that may affect the features an MP system is able to 
support. See the Intel
®
 Xeon
®
 Processor MP Errata table and Table 1 Information table for details on which 
processors are affected by these errata.
2. Only Applies to Stepping 0F26h with VID of 1.475 V.
3. Only Applies to Stepping 0F26h with VID of 1.5 V.
Table 2. MP Platform Population Matrix for the Intel
® 
Xeon
®
 Processor MP
Processor 
Signature/Core 
Stepping
0F11h/C0 0F22h/A0 0F25h/B1 0F26h/C0
2
0F26h/C0
3
0F11h/C0 NI X X X X
0F22h/A0 X NI NI NI X
0F25h/B1 X NI NI NI X
0F26h/C0
2
XNI NI NI X
0F26h/C0
3
XX X X NI










