Gigabyte GA-EP45-UD3LR user manual CPU Multi-Threading Note, Limit Cpuid Max. to 3 Note

CPU Multi-Threading (Note)

Allows you to determine whether to enable all CPU cores and multi-threading function when using an Intel® CPU that supports multi-core technology. This feature only works for operating systems that support multi-processor mode.

Enabled	Enables all CPU cores and multi-threading capability. (Default)
Disabled	Enables only one CPU core.

Limit CPUID Max. to 3 (Note)

Allows you to determine whether to limit CPUID maximum value. Set this item to Disabled for Windows XP operating system; set this item to Enabled for legacy operating system such as Windows NT4.0. (Default: Disabled)

No-Execute Memory Protect (Note)

Enables or disables Intel® Execute Disable Bit function. This function may enhance protection for the computer, reducing exposure to viruses and malicious buffer overflow attacks when working with its supporting software and system. (Default: Enabled)

CPU Enhanced Halt (C1E)(Note)

Enables or disables Intel® CPU Enhanced Halt (C1E) function, a CPU power-saving function in system halt state. When enabled, the CPU core frequency and voltage will be reduced during system halt state to decrease power consumption. (Default: Enabled)

C2/C2E State Support (Note)

Allows you to determine whether to let the CPU enter C2/C2E mode in system halt state. When enabled, the CPU core frequency and voltage will be reduced during system halt state to descrease power consumption. (Default: Disabled)

C4/C4E State Support (Note)

Allows you to determine whether to let the CPU enter C4/C4E mode in system halt state. When enabled, the CPU core frequency and voltage will be reduced during system halt state to descrease power consumption. C4/C4E state is a more enhanced power-saving state than C2/C2E. This item is configurable only if the C2/C2E State Support option is enabled. (Default: Disabled)

CPU Thermal Monitor 2 (TM2) (Note)

Enables or disables Intel® CPU Thermal Monitor (TM2) function, a CPU overheating protection function. When enabled, the CPU core frequency and voltage will be reduced when the CPU is overheated. (Default: Enabled)

CPU EIST Function (Note)

Enables or disables Enhanced Intel SpeedStep Technology (EIST). Depending on CPU loading, Intel® EIST technology can dynamically and effectively lower the CPU voltage and core frequency to decrease average power consumption and heat production. (Default: Enabled)

Virtualization Technology (Note)

Enables or disables Intel® Virtualization Technology. Virtualization enhanced by Intel® Virtualization Technology will allow a platform to run multiple operating systems and applications in independent partitions. With virtualization, one computer system can function as multiple virtual systems. (Default: Enabled)

(Note) This item is present only if you install a CPU that supports this feature. For more information about Intel CPUs' unique features, please visit Intel's website.

GA-EP45-UD3LR/UD3L Motherboard - 48 -