GPU versus CPU mining
As you can see from a comparison between Table 3-1 and Table 2-1, GPUs hash much faster than CPUs. The fastest in our list reaches 800 MH/s. This is a significant improvement over various CPUs and is due to the massively parallel nature of graphics cards. Even though GPUs mine much faster than CPUs, the mining speed of a GPU compared to the total mining power of the Bitcoin network is still just a tiny percentage of the total.
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