The correct answer is Super Computer.

• Super Computer is the largest, fastest, and costliest computer. 
• Super Computer term is commonly applied to the fastest high-performance systems available at any given time.
• Super Computer is commonly measured in floating-point operations per second (FLOPS) instead of million instructions per second (MIPS). Since 2017, there are supercomputers that can perform over 1017 FLOPS (a hundred quadrillion FLOPS, 100 petaFLOPS, or 100 PFLOPS).
• Since November 2017, all of the world's fastest 500 supercomputers run Linux-based operating systems.

• A personal computer is a general-purpose computer whose size, capabilities and original sale price make it useful for individuals, and is intended to be operated directly by an end-user with no intervening computer operator. A personal computer may be a desktop computer or a laptop, netbook, tablet, or a handheld PC.
• The personal computer is a small computer with a microprocessor, designed for use by an individual.
• Common applications for supercomputers include testing mathematical models for complex physical phenomena or designs, such as climate and weather, the evolution of the cosmos, nuclear weapons and reactors, new chemical compounds (especially for pharmaceutical purposes), and cryptology.
• Laptop computers, also known as notebooks, are portable computers that you can take with you and use in different environments. They include a screen, keyboard, and a trackpad or trackball, which serves as the mouse.