And this is important: nobody realize that CEX GHs will not be in profit ever. Everybody thinks that cex.io is an "investment for the future", or "they're like stocks", or "it will give me bitcoins ever". The count of BTC given by any mining hardware is finite, and one CEX GH costs more than it could mine ever.

Forget about fees. Cex.io is unprofitable anyway.
https://bitcointalk.org/index.php?topic=570396.0

"Hey, that guy did massive mining profit!" — "No, he was just lucky!"

Why don't you just buy bitcoins on exchange and hold it? It's cheaper.

Ok, subtract $2 (two dollars) a day for electricity.
Oh, I already did it.

So what?

Exactly it is.

tl;dr:
mine bitcoins to sold it when the price will go up
What a bullshit. You should just go at exchange and buy more bitcoins than you could mine with unprofitable ASIC miner.
Mining should be profitable, always.

Oh, it was. :)

I'm not pushing anything to anybody.
If it looks like pushing, maybe I should offer advertisment to minerscube’s guys? :)

This is why I wrote this: Minerscube 15 (1666 Mhash/s/$) will make profit for you if you'll buy it today
And "buy today" means "got today".
I don't know anything about pre-orders or delivery time. For me it's just a number, and this number looks good.

Every day data: http://divananalit.org/data/btc-e-btc-usd.dat
Precise like hell: http://api.bitcoincharts.com/v1/csv/btceUSD.csv.gz

I don't know anything about minercubes except they got 1666 Mhash/s/$. :)

Don't be so categorical. Minerscube 15 looks quite a good. Of course, if you will not get it in six months.

Взлет, взлет.

Это же так просто определить, когда быки кончаются.

So, I was right.

Just check out the second chart. I drew 5%, 20% and 30% lines. And I drew the first chart so everybody can see how difficulty grew up in past.

I can't say something for exactly, but I did my best to provide a clear vision of entire situation.

You can only mine finite amount of bitcoins with ASIC miner

Real example: Avalon ASIC miner. Nowdays it can't mine shit for you. Despite it gave hundreds dollars a day to guys who bought it before May 2013.

Reason: the mining difficulty is rising up dramatically. See below.

The mining difficulty is rising up monotonously for ~20% every 2 weeks

Real example: this historical chart


(this chart updates every hour; source: http://divananalit.org/#Bitcoin-mining-difficulty-change )

Reason: I don't know. It's just happening at least for last year. It's like a Moore's law.

You can easy calculate will your ceх.io investment ever be in profit or not.

You can use simple formula of Infinite geometric series. For example, one GHS costs 0.0103 BTC. With current difficulty (6119726089.13) one GHS could mine 0.0011505 BTC per two weeks. If mining difficulty will rise up for 20% every two weeks, then reward will fall for 20% every two weeks, then the total amount of bitcoins we could mine with that GHS is:

0.0011505 / (1 - 0.8) = 0.0057525 BTC

But one GHS costs 0.0103 BTC — two times more expensive!

Conclusion: ceх.io is a chump investment. Do not buy anything there.

You can reckon will your ASIC miner ever be in profit if you'll buy it today

I'll just show you two things: "Mhash/s/$" characteristic which you could see in this table and this chart:


(this chart updates every hour and depends on current mining difficulty; source: http://divananalit.org/#Will-my-mining-investment-ever-be-in-profit.3F )

What conclusions could we make?

• Avalon (50 Mhash/s/$) bought today will pay itself only if you sell all gained bitcoins for thousands of USD.
• TerraMiner IV (333 Mhash/s/$) is already unprofitable
• Minerscube 15 (1666 Mhash/s/$) will make profit for you if you'll buy it today even if bitcoin price will fall down to $300.

Thanks a lot, be careful, use your brans. And sorry for my shitty language — I wrote a post in russian and decided to share this with you.

Avalons is already unprofitable.
TerraMiners will produce no profit if bought today. I'll show some calculations soon.

Beeetcoin is a bubble!

"Miners have effect of price, because they are the great ponzi followers."

Because you're awesome?
(didn't read the topic)

• There is a corellation between hashrate and price.
  
• Hashrate has not any influence on bitcoin price. Hashrate always starts growing after price goes up (see the chart below).
  
• Bitcoin price has influence on hashrate. Hashrate is always growing up until mining cost hits bitcoin price.
  

Do not try to predict bitcoin price by watching its mining difficulty, it's useless.



(but if you don't care, welcome)

I found a guy on russian forum who took $55.000 credit for 5 years and then invested all these money in bitcoins. He was asked "why" and he showed gbianchi's chart.