Unless you have free power (and nobody actually has free power), and free hardware (nobody has that either), there is a break-even point where the current value of BTC mined today matches the money expended to get that BTC.
When the majority of miners hit that point, you will see difficulty stop rising. Just look at the time between when GPU mining became mainstream, and when ASICs hit... difficulty actually dropped a bit.
Sure, tech improvements can make ASICs more efficient, but thats a 10% to 20% improvement, not the 1000% improvement that ASICs are over GPUs.
At 1w/GH/s and $0.10 per kwh and $593 per BTC, that break-even point is 124 billion difficulty. Even at 0.5 w/GH/s and $0.5/kwh and $1200 per BTC, that point is still only at 600 billion difficulty.
At 20% increase every 11 days, difficulty will hit 124 billion in 220 days, and 600 billion in 320 days. In reality, most ASICs don't get 1GH/s per watt, so some will be shut down long before 100 billion, leading to a gradual leveling off. In one year, we will probably be sitting at around 100 billion and only 28 and 20 nm ASICs will still be running.
yeah i have 1 neptune left (1st batch order...10.2k version....i'm at the top 10 of the list too...anyway....still hainging on but essentially ..from what i can tell i may be able to "barely" get the same amount of coins as i could buy with the 10.2k now (at 3TH) ...so it is getting to the point of punting this last one too
one i can get a refund on this "hedge" on bitcoin going nuts (gee look what happened) and get my USD back (whew!)
two i suspect with the amount of orders knc is getting refunded on neptunes as we speak they will either a) give us more TH say make it a 4TH machine to stick with them or b) don't care if we refund just more machinery for their hashing farm
three i like to mine .....but it is getting to the point of "this is dumb to keep stage"
anyway seems the worst fear i had has come to pass ..in that difficulty is going up faster then equip can get out to folks ....at an even more accelerated pace and the second is the miners (the cheerleaders of bitcoin) are gettnig pushed out by the price...lack of equip to roi and the large farms coming into play..ie we look pretty well boxed in here on what options we have for best use of coin and mining don't look like the way here at least this 1st 1/2 of the year imho
anyway they have till maybe march 15th the very latest april 1st or i punt and get my refund back....we will see...but knc does refunds...the other guys don't....so this may be the last hurrah for independent miners this year unless some other dark horse comes out of the woodwork and offers more bang for the buck and delivers like knc did last summer...i think they are just gonna build equip for their own use from now on and be the 'worlds largest virtual miner place" as they state
anyway we will see how it goes ..but looks likely this last neptune asic will also get punted unless knc has somehting up their sleeve
or is there some other mnfg coming on the market i should be aware of ?
anyway my clouded view so far on this
Searing