1070 is trash compared to vega ? 
. just because a GPU has the higher speed doesn't mean its the most efficient, unless of course you are somehow exploiting ways to get free electricity or basically stealing electricity, because there is really no such thing as free electricity. And a vega cost more or double the price of a 1070. you can almost get 2 1070 for the price of a vega.
CPU + GPU mining at the same time has the same wear and tear effects on your hardware, as both needs to be powered up to run. Saying that it is okay to mine with your GPU and not your CPU as it will damage your CPU is just bs if you ask me. It's like saying it is okay to f up your lungs by smoking but not okay to f up your liver by drinking. And for some miners, their GPU cost more then their CPU.
The only difference if you mine with your CPU is electricity cost. The real question you should ask yourself is the CPU mining profit enough to cover the cost of your electricity ? If it is not then your basically diluting your profits earned from your GPU mining. Unless there is a certain coin which you feel has a potential to increase in price then by all means mine away.
. just because a GPU has the higher speed doesn't mean its the most efficient, unless of course you are somehow exploiting ways to get free electricity or basically stealing electricity, because there is really no such thing as free electricity. And a vega cost more or double the price of a 1070. you can almost get 2 1070 for the price of a vega. CPU + GPU mining at the same time has the same wear and tear effects on your hardware, as both needs to be powered up to run. Saying that it is okay to mine with your GPU and not your CPU as it will damage your CPU is just bs if you ask me. It's like saying it is okay to f up your lungs by smoking but not okay to f up your liver by drinking. And for some miners, their GPU cost more then their CPU.
The only difference if you mine with your CPU is electricity cost. The real question you should ask yourself is the CPU mining profit enough to cover the cost of your electricity ? If it is not then your basically diluting your profits earned from your GPU mining. Unless there is a certain coin which you feel has a potential to increase in price then by all means mine away.