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1- CPU: The netbooks comes with Atom or Neo CPU with one or two core max with low speed (2GHz max). while the notebooks comes with better CPUs.
2- RAM: The netbooks don't support more that 2GB while the notebooks support more that 2GB.
3- Screen size: The netbooks comes with small screen size for mobility while the screen of the notebook comes with 12 to 17 inch screen
4- Weight: The netbooks aren't very weight (one or two pounds)