What is a GPU coin?
Could you elaborate on what is meant by the term "GPU coin" in the context of cryptocurrency mining? As a professional practitioner in this field, I'm interested in understanding how this relates to the mining process and how Graphics Processing Units, or GPUs, are specifically utilized in this endeavor. Are GPU coins simply cryptocurrencies that are mined using GPUs, or is there a more nuanced definition? Additionally, what are the key advantages and disadvantages of using GPUs for mining compared to other methods? I'd appreciate a concise yet comprehensive explanation of this topic.