That 50 mhash user wasn't gpu farm then.. and that 400 mhash x11 user isn't one now !
It is in fact possible to make an X11 ASIC, but no, that 400MH/s user IS probably a GPU farm. I know a guy with enough GPUs to pull several GH/s of X11 - of course, only with my code, but if I can do it, someone else probably can.
Several ghash is believable but 100's ? And that many of them ? I seriously doubt it.
Or maybe.. we should bring merged mining and stratum exploits into the conversation..
https://github.com/Crypto-Expert/stratum-mining/issues/313
Who has hundreds of GH/s on X11? One entity?
I first became aware of this last May when .. over at the Logicoin thread..
I'll guess that its one, or a few, of these giant X11 farms that seem to be getting popular.
Here are two more known stratum bugs, posted on the following page of that same thread.
i wouldn't worry about that too much. that doesn't mean it's all coming from one pool.
after a little bit of snooping, here's one of the unknown pools http://digger.pw/logi/en.
block halving rapidly approaching. nethash is through the roof.
Thats a good news and also good volume on Poloniex.
Not if the hashpower is fake.
fake hash vulnerability #66
https://github.com/slush0/stratum-mining-proxy/issues/66
Flooding with shares below the pool target #326
https://github.com/Crypto-Expert/stratum-mining/issues/326
That actually could be real, the top one - 1GH/s on X11 is very doable with GPUs - as I said, I know someone with a farm capable of several.