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Originally Posted by ScotiaBurrell
Does the dual core effect the battery time?
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What logan said. Generally multi cores are more efficient, but not because they are multi core but because they are smaller and require less power to operate. It also depend on the manufacture and how they bundle the cores.
An example is Nvida T3. It's sold as a quad core but has five CPU. The main CPU (the fifth) runs the majority of the processing and is the most energy efficient. When an intensive load is put on the CPU the rest of the CPUs kick in and distribute the load. So in effect it's acting as a single core until it needs assistance. This makes it very efficient and is done outside of the OS.
That is a different design from most PC that try to continually load balance all applications(threads)