If you can find a GT 1030 or a GTX 1050 or 1050ti they are all capable of earning Bitcoin on Nicehash. As I have shown you in these posts they are not going to make you rich but hey if you can earn 0.001 Bitcoin at 8k and Bitcoin goes to 16K, it has before, then you double your earnings. I don't talk about electric bill in my posts since I have a family that doesn't know how to turn off a light bulb or Television so in my circumstance I will have very little effect on my powerbill. I am sure that many out there are not in my situation then again many are.
RE: Update: #2 Dedicated cheap miner