DellPowerEdge R510 Technical Guide 43Power Button Fixed ICH-10 In ACPI mode, OS has control of the power button. In non-ACPImode, SMI handler owns power button events.Real-Time Clock Fixed ICH-10 The OS is able to configure the system to wake on the RTCalarm.Power Mgmt.TimerFixed ICH-10 ICH-10 24-bit power management timer is used.Power Mgmt.Event (PME)Generic ICH-10 Each host bus’ PME# signal is routed to a separate general-purpose event pin in the chipset. When a device signals PME#,the system wakes (if necessary), the OS detects the event, and aDell defined ASL routine handles the event. Wake-on-LAN is oneexample of a PME.USB wake Generic N/A This feature is not supported on this system since the S1 state isnot supported.OS DBS N/A Processor MSRs This feature does P state transition under WindowsC State Support Fixed andGenericProcessor MSR andICH-10 registersThis feature allows multiple C state support for Processor. Thisfeature works under Windows and any ACPI OS that understandC states.Power ProfilesupportN/A Processor/MCHand ICH-10 chipsetregisters.11G Servers are the most energy-smart servers that Dell ships.In addition to P, C, and T states, BIOS exposes the PowerProfiles to the OS. Each Power Profile has specific settings andfine tunes the processor (MCH, IOH and South Bridge).Here are the current Power Profiles that 11G BIOS exposes in BIOS setup. The Active Power Controller modeis the default mode.Table 15. Supported Power ProfilesStatic MAXPerformanceDBPM Disabled ( BIOS sets P-State to MAX)Memory frequency = Maximum PerformanceFan algorithm = PerformanceOS Control Enable OS DBPM Control (BIOS exposes all possible P states to OS)Memory frequency = Maximum PerformanceFan algorithm = PowerActive PowerControllerEnable Dell System DBPM (BIOS will not make all P states available to OS)Memory frequency = Maximum PerformanceFan algorithm = Power