Does anyone have any idea how hard is mining right now? I tried to calculate but I'm not sure if I'm doing it right. How many coins would I mine with lets say one 280x and how does this compare to the amount of coins received by airdrop? Anyone has some rough estimates?
You will earn more from airdrops then mining on current difficulty if your card doing 2800kh/s you can earn like 0.50 ONION per day, but difficulty retarget every block so is hard to says. You can use any x13 coin calculator and put ONION current difficulty in calculator and get estimated earnings.
To get current difficulty best and accurate way is to go on wallet console and type getinfo and there is stats like "proof-of-work" : 790.86096622, so this you have to put on online calculator. Google "x13 mining calc" (whattomine)