Bitcoin Forum

So what do you think of bitcoin block halving? My Antminer U3 used to make $25 USD a year now it only makes $12 USD. And EoBot fee have when up to %75+ so now 72 GH/s now only makes $5 USD a year. I never got to hit ROI, I need to mine $75 USD to hit ROI, so far I only mined $26 USD. I was hoping to at least to hit ROI and now I won't :'(

you never will get ROI (short term)
this very reason is why the bitcoin price will go up. because people have not been profiting before the halving and so the $600-$700 is not an amount that included the halving speculation priced in.

if the halving speculation had been priced in you would have made profit.

lastly do not assume you will make $12 in then next year.. the difficulty moves every two weeks. decreasing the amount of bitcoin you can accumulate along with the drop due to the halving..

however whatever bitcoin you do get.. HOARD IT..dont cash out in the next year.
keep it. dont touch it for a long time and let the deflationary nature of the bitcoin valuation take care of it.
what might be $10 this year maybe $100 in a few years(emphasis few years)

Unfortunately, I too don't think you're going to be hitting that ROI that you're expecting.
That is the risk of mining solo, actually. Since the difficulty is always moving every few days, the profit is not stable and does not always go on our favor.

If you are making 5 USD a year then after 4 years you will earn $2.5 a year, so the ROI will not be reached if the price does not change. If i were you i would stop mining with that U3, buy another mining rig or quit mining completely.