Dell
Feature | Type | Enable/Status/ |
| Description |
|
| Ctrl bit |
|
|
|
|
|
| |
|
| location |
|
|
|
|
|
|
|
Power | Fixed | PCH |
| In ACPI mode, OS has control of the power button. In non- |
Button |
|
|
| ACPI mode, SMI handler owns power button events. |
|
|
|
|
|
Fixed | PCH |
| The OS is able to configure the system to wake on the RTC | |
Clock |
|
|
| alarm. |
|
|
|
|
|
Power Mgmt. | Fixed | PCH |
| |
Timer |
|
|
|
|
|
|
|
|
|
Power Mgmt. | Generic | PCH |
| Each host bus’s PME# signal is routed to a separate general- |
Event (PME) |
|
|
| purpose event pin in the chipset. When a device signals PME#, |
|
|
|
| the system wakes (if necessary), the OS detects the event, |
|
|
|
| and a |
|
|
|
| LAN is one example of a PME. |
|
|
|
|
|
USB Wake | Generic | N/A |
| This feature is not supported on this system since the S1 state |
|
|
|
| is not supported. |
|
|
|
|
|
DBS | N/A | Processor MSRs |
| This feature does P state transition under Microsoft® |
|
|
|
| Windows®. |
C State | N/A | Processor and |
| This feature allows multiple C state supports for processor. |
Support |
| PCH registers |
| This feature will work under Windows and ACPI OS that |
|
|
|
| understand C states. |
|
|
|
|
|
Power | N/A | Processor/IMC |
| 11G Servers are the most |
Profile |
| and PCH |
| provides. In addition to P,C, and T states, BIOS exposes the |
Support |
| chipset |
| power profiles to the OS. Each power profile has specific |
|
| registers |
| settings that fine tune processor, MCH, IOH, and Southbridge. |
|
|
|
|
|
Table 13. BIOS Power Management Profiles
| Profile |
|
| Description |
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum Performance |
|
| DBPM Disabled (BIOS sets |
|
|
|
|
| Memory frequency: Maximum Performance |
|
|
|
|
| Fan algorithm: Maximum Performance |
|
|
|
|
|
|
|
| OS Control |
|
| Enable OS DBPM Control (BIOS exposes |
|
|
|
|
| all possible P states to OS) |
|
|
|
|
| Memory frequency: Maximum Performance |
|
|
|
|
| Fan algorithm: Minimum Power |
|
|
|
|
|
|
|
| Active Power Controller |
|
| Enable Dell System DBPM (BIOS does not make |
|
|
|
|
| all P states available to OS) |
|
|
|
|
| Memory frequency: Maximum Performance |
|
|
|
|
| Fan algorithm: Minimum Power |
|
|
|
|
|
|
|
35
PowerEdge R515 Technical Guide