what is the main difference between a notebook and an ultrabook

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The main difference between a notebook and an ultrabook is that an ultrabook is a specific category of lightweight, high-performance laptops defined by Intel with strict standards for thickness, weight, battery life, and design. Ultrabooks are typically thinner, lighter (under 3 pounds), and have longer battery life (10-15 hours) compared to regular notebooks, which are also portable laptops but generally thicker, heavier (3-4 pounds or more), and less constrained by portability requirements. Ultrabooks use power-efficient processors and solid-state drives (SSD) for faster performance and better battery efficiency, whereas notebooks may use a mix of SSDs and traditional hard drives. Ultrabooks prioritize sleek, premium build quality and portability without sacrificing performance, making them suitable for users who need a powerful, compact device for mobility. Notebooks offer a broader range of performance and designs, sometimes including more ports and heavier build but are less specialized in being ultra-portable.