Dell Vostro 3660/3669 Owner's Manual

Performance screen options

Option	Description
Multi Core Support	Specifies whether the process will have one or all cores enabled. The performance of some applications will improve with the additional cores. All - This option is enabled by default 1 2 3
Intel SpeedStep	Allows you to enable or disable the Intel SpeedStep feature. Enable Intel SpeedStep Default setting: The option is enabled.
C-States Control	Allows you to enable or disable the additional processor sleep states. C states Default setting: The option is enabled.
Limit CPUID Value	Allows you to limit the maximum value of the Standard CPUID Fuction support. Some operation systems will not complete installation when maximum CPUID Function supported is greater than 3. Enable CPUID Limit - This option is disabled by default.
Intel TurboBoost	Allows you to enable or disable the Intel TurboBoost mode of the processor. Enable Intel TurboBoost Default setting: The option is enabled.