Well, Iv got only GPUs. And yes I use dwarfpool for ETH , bcz. they have more hashpower then others, but not for ZEC , they have not mush hashpower.
I see, but it was for me quite good profit before and what happened now?
Why I lost half of my profit ?
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But what about the luck . Isnt it such thing: all pools start to find next block , the one with more hashpower do int faster then others and gets all reward. Others with less hashpower have to be lucky to find it first. Am I wrong ?
[/quote]You are not wrong, but you are wrong lol. Rarely would your scenario come into play. When a new block is released to the network for solving, the previous block(and often a few blocks before that) hasn't been solved yet. The pools then send commands to miners to drop working on the current block and start working on the new block. (In a multipool your miner might be sent a command to stop work and switch to a completely different coin while other miners remain.) This has the effect of spreading hash over several blocks being mined and drastically reduces the impact of "luck" because pools don't want to rely on luck either.
Thanks for comprehensive answer. Il keep it in mind.