Processor is a key component of the machine as it does the main calculations and determines the speed of the computer. Dual-core processors include two processors in one, and are particularly suited to multitasking.

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The models on the market are (in ascending order of performance):
1. Intel Celeron M: An entry-level processor, especially recommended for simple use. It can be a good choice for those who want a portable dedicated to the office work and surfing.
2. AMD Sempron M: Concurrent performance equivalent to that of Celeron M. It is now quite rare.
3. AMD TurionX2: A dual-core processor for entry-level laptops.
4. Intel Core Duo: A correct
choice, the Core Duo is also available under the name Pentium Dual Core. Its performance is close to that of TurionX2.
5. Intel Core 2 Duo: The best processor in terms of performance and heat generated in the laptop. However, it is also the most expensive.