Supero SuperWorkstation 5036T-T, User Manual

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C0 - Active. The CPU is processing instructions.
C1 - Auto Halt. The core clock (CPU) is off. This is the most basic idle state.
Some CPUs support C1E (C1 Enhanced) for lower power consumption.
C2 - Stop Clock. Both the core clock (CPU) and bus clocks (I/O) are off.
C3 - Deep Sleep. The clock generator is off.
C4 - Deeper Deep Sleep. Reduced VCC (Voltage supply).
C6 - Cache Power Off. Power is turned off to all caches.
C7 - Processor Specifi c. Leaves initialized Application Processor in a processor-
specifi c low C-State. For Intel® Core i7™ processors, this is the lowest sup-
ported C-State.
C1E Support
This should be enabled in order to use the "Enhanced Halt State" feature. C1E
signifi cantly reduces the CPU's power consumption by reducing the CPU's clock
cycle and voltage during a "Halt State". The options are Disabled and Enabled .
C-STATE Tech
If enabled, C-State is set by the system automatically to either C2/C3/C4. The
options are Disabled and Enabled .
C-State package limit setting
The selected option will be programmed into the C-State package limit register.
The options are Auto , C1, C3, C6 and C7.
C1 Auto Demotion
When enabled, the CPU will conditionally demote C3/C6/C7 requests to C1 based
on uncore auto-demote information. The options are Disabled and Enabled.
C3 Auto Demotion
When enabled, the CPU will conditionally demote C6/C7 requests to C1 based on
uncore auto-demote information. Available options are Disabled and Enabled.
DCA
This feature cooperates with Intel I/O AT (Acceleration Technology) to accelerate
the performance of TOE devices. (Note: A TOE device is a specialized, dedicated
processor that is installed on an add-on card or a network card to handle some or all
packet processing of this add-on card. For this motherboard, the TOE device is built
inside the ESB 2 South Bridge chip.) The options are Enabled and Disabled.