What is to not be underestimated, I don't underestimate it only for gaming and it doesn't quite excel there too. As for the mining if you use it with Windows 10 and Nicehash you will be making 0.05 mBTC per card daily or 0.00005 BTC daily. You are consuming more electricity than are making any money with it. Trash is the only place where this card will go and it will be soon I guess.