It's more like solo mining but you don't lose credit for the work you did if you don't find a block, like you do with solo mining. You also have the benefit of being able to estimate when you will receive a payout by looking up your wallet address on the miner stats page. With only 3 GTX 1070's, it will take many months before you reach enough credits for a payout.
The OP may use Ethermine.org instead, rewards are fairly distributed to miners using a Real time PPLNS payout scheme so you will be paid based on the shares submitted with 1% pool feel upon reaching the minimum ether payout. for now standard min payout is 1ETH and is adjustable down to 0.05ETH.
https://ethermine.org/
ok, what do you think about this:
https://www.crypto-coinz.net/crypto-calculator/
i found that there are so many error !
could you advise me?
What error? I don't see any error on the link you've provided, its only an online calculator for your reference, just choose your GPU's and will recommend what coins more profitable for you.
I mine ALTCOM for 2 hours and I got : 0.028 ALTCOM,
According to whatomine () i should get 0.074088 ALTCOM
and according to crypto-coinz.net i should get 0.11 ALTCOM
very strange for me !!!