Well I actually ROI'd a GPU in less than 6 hours when the ZEC launches back in Nov 2016. ..
Haha I did same. ....
I also remember those days, but I happened to be unlucky and couldn’t find a working pool that processed withdrawals in time as a lot of pools either delayed withdrawals or didn’t let you withdraw immediately at all, so I didn’t make nearly as much as you guys did. Still broke even after a while on a six card rig, which was the only GPU rig I had back then. A bit better than the gambling some people do today with mining an extremely low difficulty coin and hoping it goes up in the future, but such a situation likely won’t ever happen again.
That's the second moment for me, the first one is PayCoin (XPY) in 2015, has everyone remember this moment? I'm still using Antminer S1, S2, S3 and some of Dragon miners. Did you all remember about GAW?
Wow - so what is the special coin that everyone is mining?
I'm seeing 1 Gh/s on Nicehash / Westhash go for almost 1 BTC (per 24 hrs) -- while normally it is 1/5 the price.
At ZEC's moment, I was starting from Testnet (that's funny) On the Testnet I just using CPU mining, I use GPUs when the genesis block launched. This is one of the best moment we have.