Which GPU is Right For You?

If a laptop’s brain is the CPU, than consider the GPU the occipital lobe. Responsible for rendering images, video and animations in either 2D or 3D for the display, the chip performs rapid mathematical computations, freeing up the processor for other tasks. Where a CPU consists of a few cores focused on sequential serial processing, GPUs pack thousands of smaller cores designed for multitasking.

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While your Intel Core i7 CPU can render graphics, it’ll do so at a much slower rate than a GPU. In fact, GPUs have so much power that some programs tap them into service to help out the CPU  on non-graphics tasks, which drastically increases speed and performance. That’s why every laptop, whether it’s designed for business, gaming or education, has some sort of GPU under the hood.

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https://www.laptopmag.com/articles/gpu-comparison