Hi,
As title says my question is for mining bitcoins how much GH/s is needed to mine about 0.5 btc day.
According to
Bitcoin Mining Calculator, it would take around
50 Ths or 50,000 Ghs to mine 0.5 BTC/day. If you are buying a
Bitcoin Mining contract, it would cost you
40 BTC @ 0.0008 BTC/Ghs.
I don't think the figure is right, if it is, then the site doesn't sound legit, that is offering those rates even at a discount. If it makes 0.5 BTC a day, then you will be able to get an ROI in 2-3 months , which is highly unlikely for any legit cloudmining operation.
After discount, how much does it cost to buy 50 Ths at CloudMinr ?
I think Cloudminr offers a price of 0.0011 last I checked for 1 GHS. So buying 50 THS would be around 50-60 BTC. Again I am not sure how legit cloudminr is, and I won't suggest investing that big of an amount into cloudmining.