3 Server Blades: Setup and Installation186Note: Only available when ACPI is enabled on an ACPI-aware operating system.NUMA Support: Uses Non-Uniform Memory Access to improve CPUperformance.High Performance Event Timer: Select Enabled to activate the HighPerformance Event Timer (HPET) that produces periodic interrupts at amuch higher frequency than a Real-time Clock (RTC) does insynchronizing multimedia streams, providing smooth playback andreducing the dependency on other timestamp calculation devices, suchas an x86 RDTSC Instruction embedded in the CPU. The HighPerformance Event Timer is used to replace the 8254 ProgrammableInterval Timer.SecurityThe BIOS provides a Supervisor and a User password. If you use bothpasswords, the Supervisor password must be set first.Figure 3-121. Security Setup Menu
