You need to work on your English buddy...
I know, I am much better with numbers haha...
Are you asking what day you think it became a better choice to buy a Ti? That would depend on where you could find cards and for what price
No, I just got interested in this speculative post of KaydenC (below), you just somehow hijacked it.
Those who went with 480/580 at $400 USD will find their cards worth $100. Even if their GPU can make $6 a day for 66 day ROI, their value at risk is 75% of their upfront cost.
Those who went with 1080ti at $700, but make $7 a day has a 100 day ROI. However if crypto crashes 80% tomorrow, their cards are worth $600 at least. That's only 14% of their upfront cost, value at risk is way lower.
If a person can put $10K value at risk. He can buy $71K worth of 1080tis, or he can buy $13.3K worth of 580s. For the same amount of money RISKED (not in upfront capital), he gets much much more hash.
edit: I need that day to calculate different options how to invest in crypto.