Curious
In: Technology
It’s not the CPU or GPU that powers your computer. It’s the motherboard.
The motherboard manages the whole deal. It provides all the various “channels” of communication across all inputs and outputs.
Obviously you have to plug-in the things that do the major computation work, like a CPU. But the connectors exposed for such things only have limited “privileges”, and there’s an array of other non-CPU/GPU chips that are hard-soldered for many other jobs.
If you made a GPU that could be plugged-in to a CPU slot and provide everything the motherboard expects, it’s no longer a GPU. It’s just another CPU, but one that is not very well suited to the tasks of general computation, such as bootstrapping and loading an Operating System.
The reason for that is well explained by others here – GPUs are built for a very specific job.
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