35-270 Vol. 3C

MODEL-SPECIFIC REGISTERS (MSRS)

20:16

Package

Number of Incremental Cores Added to Group 1
Group 1, which includes the specified number of additional cores 

plus the cores in group 0, operates under the group 1 turbo max 

ratio limit = “group 0 Max ratio limit” - “group ratio delta for group 

1”.

23:21

Package

Group Ratio Delta for Group 1
An unsigned integer specifying the ratio decrement relative to the 

Max ratio limit to Group 0.

28:24

Package

Number of Incremental Cores Added to Group 2
Group 2, which includes the specified number of additional cores 

plus all the cores in group 1, operates under the group 2 turbo max 

ratio limit = “group 1 Max ratio limit” - “group ratio delta for group 

2”.

31:29

Package

Group Ratio Delta for Group 2
An unsigned integer specifying the ratio decrement relative to the 

Max ratio limit for Group 1.

36:32

Package

Number of Incremental Cores Added to Group 3
Group 3, which includes the specified number of additional cores 

plus all the cores in group 2, operates under the group 3 turbo max 

ratio limit = “group 2 Max ratio limit” - “group ratio delta for group 

3”.

39:37

Package

Group Ratio Delta for Group 3
An unsigned integer specifying the ratio decrement relative to the 

Max ratio limit for Group 2.

44:40

Package

Number of Incremental Cores Added to Group 4
Group 4, which includes the specified number of additional cores 

plus all the cores in group 3, operates under the group 4 turbo max 

ratio limit = “group 3 Max ratio limit” - “group ratio delta for group 

4”.

47:45

Package

Group Ratio Delta for Group 4
An unsigned integer specifying the ratio decrement relative to the 

Max ratio limit for Group 3.

52:48

Package

Number of Incremental Cores Added to Group 5
Group 5, which includes the specified number of additional cores 

plus all the cores in group 4, operates under the group 5 turbo max 

ratio limit = “group 4 Max ratio limit” - “group ratio delta for group 

5”.

55:53

Package

Group Ratio Delta for Group 5
An unsigned integer specifying the ratio decrement relative to the 

Max ratio limit for Group 4.

60:56

Package

Number of Incremental Cores Added to Group 6
Group 6, which includes the specified number of additional cores 

plus all the cores in group 5, operates under the group 6 turbo max 

ratio limit = “group 5 Max ratio limit” - “group ratio delta for group 

6”.

Table 35-40.  Selected MSRs Supported by Intel® Xeon Phi™ Processors with DisplayFamily_DisplayModel Signature 

06_57H

Address

Register Name

Scope

Bit Description

 Hex

Dec