can be roughly calculated.

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now on the pool —

mining.bitcoin.cz common speed — 2000 GHash/Sec

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and judging by the statistics, they generated a block about once per hour. 1 block = 50 bitcoins, let's assume$ 10 per bitcoin, ie$ 500 per hour

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it turns out

2000 Ghash/sec ~ 12000$/day

1 Ghash/sec ~ 6$/day

1 Mhash/sec ~ 0.005$/day

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the Amazon GPU instance with 2.1 worth$.hour, there are 2 x NVIDIA Tesla “Fermi” M2050 GPUs

CUDA mining is bad, but craftsmen say, if drank with a file — somewhere 500 Mhash/sec from the card to squeeze.

we assume that the two can soak 1 Ghash/sec

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it turns out that Amazon will give up to 50 and get 6

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unprofitable.

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iron can be found here:

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en.bitcoin.it/wiki/Mining_hardware_comparison\r

the "cool" core 2 duo that is in the table (Core 2 Duo E7300) yields 8 Mhash/sec ie somewhere 0.04$ per day

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IMHO, electricity is more expensive.