Quote from: Thor78 on February 15, 2017, 08:48:26 PM

I hope there is someone who can explane this. I always mine with CM, but aprox two weeks ago someone mention that optiminer is faster and I said I will try it.
I have eight R9 280x and with CM 11.1 I have 2000H/s, I mine aprox 0.12 - 0.15 ZEC per day (24h). I mine on suprnova.
Then I change miner to OPTI 1.6. I have 2200H/s and mine aprox 0.2 ZEC per day. I use OPTI about 10 days and everx day I mine aprox 0.2 ZEC per day.
Two days ago I change miner to CM 12, I have 2270H/s and I mine 0.12 ZEC in 24 hours.
So I change miner back to OPTI 1.62 now and I have 2200H/s and I mine 0.26 ZEC in last 24 hours.

So, is there someone who can explane this?

There is variance in the pool. Blocks aren't found always at 100% the hash rate. That and the difficulty changes constantely.