Even full speed GPUs will be nearly worthless for bitcoin mining within weeks. EDIT: "Difficulty" determines the amount of computation required to create a bit

Even full speed GPUs will be nearly worthless for bitcoin mining within weeks. EDIT: "Difficulty" determines the amount of computation required to create a bitcoin block. Hash rates have greatly increased lately and the difficulty automatically increases to maintain a constant block generation rate. Check out the charts here: http://bitcoindifficulty.com/ http://bitcoindifficulty.com/