looking to get a vega and I am wondering if there are pros and cons vs the 2?

someone mentioned in a slack the 56 was just as good and took less power, but I dont want to get the 56 and then it become obsolete because the 64 has something better

and I dont want to give up performance to save a couple of bucks,

Im just looking to add the vega to my 1070 set up, its true the vega has the power of 2 or 3 older model cards that people have?



if they 64 = 4 video cards and the 56 = 2 I think Ill go with the 64, but if the 64 is like 2.5 video cards I will go with the 56

please help me thanks