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June 30, 2011, 06:59:58 AM |
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It's more of a question of how long you're willing to wait to discover a block. I'd say if you can reasonably expect to discover a block every 2 weeks then you're probably okay.
here's a mining probability calcuator. So yeah, we're looking at like, 5 ghash/s to discover in 14 days on average.
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