Slightly off topic, but if one were to be building more nvidia rigs today, is there no major disadvantage to simply going with 1080tis, assuming recent expectations for average profits? Perhaps considerations to be made with respect to the GDDR5X and currently profitable algos? 1070/ti may allow for more versatility in that regard. My op currently only has only 1060s because at time they were the most effective hash/$ card at the time, not counting the sold out AMD models. Based on the current retail pricing (in Canada at least), it seems that profitability projections for almost all nvidia cards scales linearly with the price. That being said, by going with the more expensive cards you save money on other rig hardware when scaling up and increase your output density, while better preserving future card value. Curiously, assuming you maximise cards per rig to the fullest, 1060s (3gb) actually do seem to still edge out as the most effective $/hash assuming resell value is not a factor, but I believe it's negligible enough that it does not outweigh the benefits of the higher end cards.