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However, most programs can not do this. Dwarf Fortress for example can't make use of a graphics card, because every calculation it does is dependent on the one done before it. That obviously doesn't work if you try and do them all at the same time.
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. 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.
[[Category:FAQs]]
