Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can’t just send to a display?

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Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can’t just send to a display?

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The CPU is capable but contain a larger set of instructions, this slows things down creating wait times. The GPU has a handful of simple instructions that come in the form of shader programs. It’s able to process and reduce wait times due to efficiency

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