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heat savings realized by disabling processor cores allows the remaining cores to run at a higher

frequency than their rated speed. In specific application environments, this may actually increase

overall system performance.

• Addressing licensing issues. Some software is licensed on a per-core basis. Disabling cores allows

an administrator to match the number of active cores on a server with licensing requirements.

However, some software that is licensed on a per-core basis may not recognize the disabling of

cores unless the core is disabled through the BIOS during POST.

Dynamic Power Management

Dynamic Power Management works hand-in-hand with Turbo Boost to automatically optimize the

performance and power use of the processor, chipset, and memory based on business requirements.

Dynamic Power Management provides the following key improvements:

• The ability to manage power for the processor, chipset, and memory

• More operating power states and lower idle processor power states

• Reduced overhead when transitioning states

These Dynamic Power Management advances allow a processor based on the Intel Microarchitecture

Nehalem to provide greater performance while using the same amount of power as a processor

based on the previous generation Intel Core microarchitecture (Figure 13). Conversely, a Nehalem

processor can achieve performance equivalent to a previous generation processor and use less power

achieving it.

Figure 13. Dynamic Power Management

Lower power consumption with the same performance

Higher performance using the same power