We're always exposed to difficulty risks, it's a risky game to play. Even buying BTC could wipe you out. That's why the rewards can be so good.
KNC wrote: "greater than 30% performance increase " that is more than 520 for a jupiter.
It's strange to me that this announcement was almost completely ignored here!
Performance of CGMiner doesn't necessarily translate into more GH/s. It could be related to how hard the internal Linux controller has to work running CGMiner. This doesn't necessarily mean that it results in more GH/s from the system. Also, if it does, this may have been why it went up to 400 GH/s in the first place.
I have posted on this thread only a couple of times and each time, you jump all over me for no reason at all. If they meant the performance was going to increase to 520, don't you think they would have said that? While that may yet happen, that wasn't the announcement.