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35 AIMB-580 User Manual
Chapter 3
B
IOS Operation
„
Ratio CMOS Setting
Allows you to set the ratio between the CPU Core Clock and the BCLK Fre-
quency. The valid value ranges vary according to your CPU model.
„
Hardware Prefectcher
The processor fetches data and instructions from the memory into the cache
that are likely to be required in the near future. This reduces the latency associ-
ated with memory reads.
„
Adjacent Cache Line Prefetch
The processor fetches the currently requested cache line, as well as the subse-
quent cache line. This reduces the cache latency by making the next cache line
immediately available if the processor requires it as well.
„
MPS and ACPI MADI ordering
MADT refers to Multiple APIC Description Table.
„
Max CPUID Value Limit
This item allows you to limit CPUID maximum value.
„
Intel
®
Virtualization Tech
Intel Virtualization Technology (Intel VT) is a set of hardware enhancements to
Intel server and client platforms that provide software-based virtualization solu-
tions. Intel VT allows a platform to run multiple operating systems and applica-
tions in independent partitions, allowing one computer system can function as
multiple virtual systems.
„
Execute-Disable Bit Capability
This item allows you to enable or disable the No-Execution page protection
technology.
„
Hyper Threading Technology
This item allows you to enable or disable Intel Hyper Threading technology.
„
Intel
®
SpeedStepTM tech
When set to disabled, the CPU runs at its default speed, when set to enabled,
the CPU speed is controlled by the operating system.
„
Intel
®
C-STATE tech
This item allows the CPU to save more power under idle mode.