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→GPU
Pretty much any emulator is the same. It can't know what comes next until it's done what preceded it. It has to run on a single thread. It still needs some form of graphical output to output the final rendered 2D screen alone. This can be done via a GPU to put the 3D graphics on the screen, but any emulatable system shouldn't be too taxing. This is called "Hardware Rendering". Alternatively, all of the graphics processing can be done on the CPU, and will be more predictable/consistent for it, but that is also costly. This is called "Software Rendering".
Most 3D emulators have hardware and software renderers, but software ones are obviously much, much slower.
[[Category:FAQs]]
