Is it worth investing in Vega for mining purposes, or should one just stick with AMD RX 580 series.
If you run a farm and can get rx580 for rrp then its the lowest cost for mining purposes. Vega is a card that will last longer for resale as games graphics card. Later on AMD will be releasing a special little Vega card to replace rx580, that is the card that probably mines the most for the least cost, it might be another 6 months before then
For short term vega 56 is good
but in long term vega 64 is best for me
I see on many forums vega 56 have problem with chip

I dont think 56 and 64 have great differences. Does mining benefit from 8 more shaders because the 56 isnt really slower apart from that