Difficulty.....It can't keep going up 30% each increase.

[knightcoin]

Well, I think there are not much company in the world capable of build 28, 20 nm chips... track their sell invoices and you going to get an idea how much diff can grow in the future.

[empoweoqwj]

Well, I think there are not much company in the world capable of build 28, 20 nm chips... track their sell invoices and you going to get an idea how much diff can grow in the future.

You are right. But they can build many many many of these chips - each new chip adds to the difficulty.

[traiz]

There's still a limit on how much power a "residential" customer can draw.
Either they are limited by their breakers or limited by their electric utility's distribution system.

Personally, I expect knc's neptune to be at the limit of what someone can run as a hobby.

To go further, we either need more power efficient chips, the infrastructure to generate our own power, our look into co-location hosting

[empoweoqwj]

There's still a limit on how much power a "residential" customer can draw.
Either they are limited by their breakers or limited by their electric utility's distribution system.

Personally, I expect knc's neptune to be at the limit of what someone can run as a hobby.

To go further, we either need more power efficient chips, the infrastructure to generate our own power, our look into co-location hosting

That's exactly what I've been saying, and exactly what will happen in 2014. Industrial-level mining.