Bitcoin Forum

I was wondering how many GH or TH is needed to make bitcoin mining profitable?

is it worth the investment? I was looking at a 1TH miner at cointerra @ $3499.

Thanks

1 giga, 10 giga, 100 giga... it doesnt matter. If you buy 1 gigahash for 3$, you'll be profitable, if you buy 1000 giga for 3000 you'll be profitable.

So you're sitting at $3.49 per gigahash, thats a pretty great price. The question is, when will you get your machine...

However, you really shouldnt be looking at $/gigahash, you should be looking at BTC/gigahash. Will the machine mine more BTC thenn it took to buy it?

So buying 1TH/s asci bitcoin miner 28nm for $5150 @ 1000W is a good deal (cost effective)?

Depends. Do you think $5.15/gigahash is profitable? Check online calculators

Hardware break even 64 days sounds not bad to me but im newbie so i might be wrong (and probbably i am  :) ).
I want to start mining but need some advices and help from pro miners. Anything you could suggest?
All help much appreciated.

It all depends on time scale requirements, power cost, availability of hardware etc.

Work out what you want to make and what hardware you will need and then use a site like coinwarz.com to estimate your profitability.

Best of luck

If you're investing in hardware, you should be able to turn around a profit in a reasonable amount of time (60-90 days depending on investment). Don't forget to take mining pool fees into account, if you're going to do cloud mining, don't forget to look at maintenance fees.  Also, don't forget to figure in how much power your going to consume and whether or not you'll have any downtime.

What do you guys think about the 180 GH ASICS? They are priced at 1.16 BTC and you get them in 4-5 days I think.

Difficulty is the biggest problem. Not the 1-3% fee. The electricity might also be a factor  especially for small non USB ASICS.

I run several 180Gh asic antminers with no problems, although I run them wired and not wireless.  Power depends on the PS you have connected to it, you can run 2 antminers on a powerful enough power supply. I use an 850W to power a single antminer which pulls about 4amps at the PDU. If I add an miner to my farm, it only takes about 3 days before its profitable (all my miners are now profitable). Some people overclock them, but I run them vanilla, I've always believed in if it works, why mess with it. Also, some people will add an extra fan to them as well, but I leave them alone.

Cant speak for long term, but around 200 ghs made me 0.13 in 6 days (just set up my other one last night so now I will get more :) .)
The price was $885 (I used a psu from something else on that one.)
Don't even ask what my scrpyt rigs for 6 times the price made this week.... :'(     

0.13 btc in 6 days.. Isnt that very low.. How much you paid for 200ghs?

There you go  ;D
The same thing I bought is 200 dollars cheaper now.  Oh well, fucked myself as usual by being impatient unless btc goes up to 700 next week. 

To be honest, no one can make it out, that whether mining is profitable defenitely. But you can set one goal,BTC or dollar. Wish u good luck.

at the current btc price, investing mining is hard to make profit. if the btc price could rise to 1k or 2k, the calculation is different.

I think you should clarify how you are able to turn a profit with an Antminer in 3 days.

I am assuming you mean your whole farm can pay off a single antminer in a 3 days, because I would love you find out where you bought yours for ~0.079BTC (aka what 1 OC'd antminer can mine in 3 days).

Not the way to look at it.

Look at the coin price when you buy.

See how many coins the machine would cost you at current price if the price is in fiat

do a calculation including best guess at difficulty increases

Will you get more coins than the machine cost you in coins.

If the answer is no, it is not profitable.

Correct, my calculation is whit a increase of 50% each 4 weeks. Minus powercost (high here!), i can only manage the damage a bit.
I will not get Roi out my Fresh new machine.  To bad selling on eBay is to risky.

Don't beat yourself up. Yes the price dropped but it takes some time for the units to be delivered. In the meantime you are mining. Assuming you bought from the official website. The guy there is really cool and he drops the price almost as much as you would be earning mining those days.

This miner eats 40-50$/month in electricity so in theory, assuming you get back your investment, you could use it until you make less than $50/month in BTC.

I estimate your rigs made ~0.26 BTC that week:D. So sell GPU rigs and buy sha ASICs but I can't find anything beside ANTminer to buy that does not need $3k+ and 3+months waiting time. Any ideas?