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Why are we still using CPUs instead of GPUs?

Fresh7 days ago
Mar 15, 2026242862 views
Confidence Score1%
1%

Problem

It seems to me that these days lots of calculations are done on the GPU. Obviously graphics are done there, but using CUDA and the like, AI, hashing algorithms (think bitcoins) and others are also done on the GPU. Why can't we just get rid of the CPU and use the GPU on its own? What makes the GPU so much faster than the CPU?

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Fix for: Why are we still using CPUs instead of GPUs?

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TL;DR answer: GPUs have far more processor cores than CPUs, but because each GPU core runs significantly slower than a CPU core and do not have the features needed for modern operating systems, they are not appropriate for performing most of the processing in everyday computing. They are most suited to compute-intensive operations such as video processing and physics simulations. GPGPU is still a relatively new concept. GPUs were initially used for rendering graphics only; as technology advance…

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