User Manual

Intel W790 Series BIOS Manual
53
Hardware P-States
Allows you to switch between Hardware P-States mode.
[Disable] Hardware chooses a P-state based on OS Request (Legacy
P-States).
[Native Mode] Hardware chooses a P-state based on OS guidance.
[Out of Band Mode] Hardware autonomously chooses a P-state (no OS guidance).
[Native Mode with no
Legacy Support]
Hardware chooses a P-state based on OS guidance (without
Legacy support).
When HWP mode is set to [Disabled] or [Out of Band Mode], Dynamic SST-PP, SST-BF
and SST-CP will be disabled.
Intel(R) Turbo Boost Max Technology 3.0
Allows you to enable or disable Intel(R) Turbo Boost Max Technology 3.0 support by
B2P Mailbox PCU_MISC_CONFIG [3].
Configuration options: [Disabled] [Enabled]
Turbo Mode
Allows you to enable or disable processor Turbo Mode (requires EMTTM enabled
too).
Configuration options: [Disabled] [Enable]
CPU C-states
Allows you to enable or disable CPU Power Management. Allows CPU to go to C
states when it’s not 100% utilized.
Configuration options: [Auto] [Disabled] [Enabled]
The following items appear only when CPU C-states is set to [Enabled].
CPU C1 auto demotion
Allows CPU to automatically demote to C1. Takes effect after reboot.
Configuration options: [Disabled] [Enabled]
CPU C1 auto undemotion
Allows CPU to automatically undemote from C1. Takes effect after reboot.
Configuration options: [Disabled] [Enabled]
Enhanced Halt State (C1E)
Core C1E auto promotion Control. Takes effect after reboot. Will be enforced to
enable when Optimized Power Mode is enabled.
Configuration options: [Disabled] [Enabled]
Package C State
Allows you to select Package C State limit, the state Auto maps is program specific.
Configuration options: [Auto] [C0/C1 state] [C2 state] [C6(non Retention state]
[C6(Retention state] [No Limit]
Enable Monitor MWAIT
Allows you to enable or disable Monitor and MWAIT instructions. Auto maps to
Enable.
Configuration options: [Disabled] [Enable] [Auto]u/ e9