Dell PowerEdge C6220 II - Manual (Page 90)

90 | Using the System Setup Program
Option Description
Active Processor Cores
(All Cores default) This field controls the number of enabled core in each
processor.
Frequency Ratio
(Auto default) Sets frequency multiplier as maximum level.
Downgrade- set multiplier 1~3 levels.
Max CPUID Value Limit
(Disabled default) Some OS, which is (NT4), will fails if the value
returned in EAX is >3 when CPUID instruction is
executed with EAX=0.
Disabled - this setting disables the 3 or less limit.
Enabled - this setting limits CPUID function to 3
Virtualization Technology
(Disabled default) Enabled (applicable processors) / Disabled (unusable
in any OS). This feature allows the users to set the VT
technology in applicable processors.
QPI Frequency
(Auto default) Selects link speed: 6.4GTs/7.2GTs/8.0GTs
Turbo Mode
(Enabled default) Enables processor Turbo Mode (requires EMTTM
enabled too.)