Vigile writes "For users that have known about the process of bitcoin mining the obvious tool for the job has been the GPU. Miners have been buying up graphics cards during sales across the web but which GPUs offer the most dollar efficient, power efficient and quickest payoff for the bitcoin currency? A series of tests over at PC Perspective goes through 16 different GPU configurations including older high-end cards through modern low-cost options and even a $1700+ collection with multiple dual-GPU cards installed. The article gives details on how the mining programs work, why GPUs are faster than CPUs inherently and why AMD seems to be so much faster than NVIDIA."
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