only 300$ per month

[ramchik]

300$ is enough for me per month which device will be OK to gain 300$

[KimNam]

With Antminer S2 (around $1820), you will get $300 / month for 1-2 months
but if difficulty change drastically, you won't get it
wait for Antminer S3 and buy 2 of them if it offers better price

[ramchik]

1800$ it's too much

[KimNam]

my advice is forget about mining
learn about recent difficulty increasing and you will understand why
https://bitcoinwisdom.com/bitcoin/difficulty
and if you want calculate how much your earning, try here :
https://bitcoinwisdom.com/bitcoin/calculator

[Luckycoin90]

1800$ it's too much

Bitcoin mining equipment is not cheap if you want a powerful rig. The difficulty is rising much faster rate than the price of bitcoin itself. You have better ROI return if you mine alt coin such as litecoin and converted to bitcoin.

[CaptEmulation]

1800$ it's too much

Don't you think your budget would be relevant to the original question?

Here are a few adages for you:

• It takes money to make money
• You cannot get something for nothing
• No such thing as a free lunch

I'm afraid the "use $1000 computer to mine $10,000 of cryptocurrency per month" boat sailed a long, long time ago.  Are you even considering electricity, tax and exchange fees?  If you buy any miner now, you will 99.9% chance be net zero for about... forever.  Please read the many many other posts of people who have done the math.

Do yourself a favor and do not buy the hype.  That being said, as had been said above-- the best you could do it to buy a Bitmaintech S3 when they become available.  Bitmaintech prices their gear such that they ROI after 3-6 months-- assuming you have the skills, equipment and tolerance for loud fan noise to make it that far.

[ramchik]

thnks for advices

[DrG]

Since you're in Europe I would advise using https://btc-e.com/ and buy some Bitcoin.  Spend the $300 buying 1/2 a bitcoin (that's more than you could get with any miner and you won't have to pay for power).  Just make sure to move the bitcoin off the exchange and into your own wallet.  If you don't understand that, spend time learning that rather than learning about mining.

My suggestion.

[leechenlua]

how many do me earn with KNC Neptune 1500GH/s?

[xstr8guy]

how many do me earn with KNC Neptune 1500GH/s?

$26 per day less the cost of electricity. That declines every 12 days (on average) with difficulty adjustments.
https://www.alloscomp.com/bitcoin/calculator

[BTC_Fundamentals]

Does KNC Neptune even delivered yet ?

[mwizard]

Neptunes are shipping.  KNC met its Q2 date for the Neptune.  

KNC are apparently shipping close to a Petahash a day (300 units a day at 3,300 Gigahash each).  

I am not aware of a 1,500 Gigahash version of the Neptune.

[DrG]

Neptunes are shipping.  KNC met its Q2 date for the Neptune.  

KNC are apparently shipping close to a Petahash a day (300 units a day at 3,300 Gigahash each).  

I am not aware of a 1,500 Gigahash version of the Neptune.

20 business day a month (assuming no weekend shipping and stock for 20 days) and that alone drives up the difficulty 15% for July 

It's a race to see what AM3 chips and Bitmain S3 will do.

[mwizard]

The KNC 1,500 Gigaash Neptune is called the Mini Neptune.  It is expected to start shipping in July and may hash at up to 2,250 GHash.  At a guess this hash rate implies three ASCII chips, compared to 5 on the Neptune.

KNC say they shipped 300 Neptunes on Monday 23rd June.  That is a Petahash in one day.  On Tuesday 24th June they aimed for 250 Neptunes shipped, another 0.81 Petahash. So they definitely have the capability to ship lots of product.

[xstr8guy]

Neptunes are shipping.  KNC met its Q2 date for the Neptune.  

KNC are apparently shipping close to a Petahash a day (300 units a day at 3,300 Gigahash each).  

I am not aware of a 1,500 Gigahash version of the Neptune.

https://www.kncminer.com/products/mini-neptune-third-batch

[leechenlua]

how many do me earn with KNC Neptune 1500GH/s?

$26 per day less the cost of electricity. That declines every 12 days (on average) with difficulty adjustments.
https://www.alloscomp.com/bitcoin/calculator

What're your mean "difficulty adjustments"?
Can you explain for me?

[jonnybravo0311]

how many do me earn with KNC Neptune 1500GH/s?

$26 per day less the cost of electricity. That declines every 12 days (on average) with difficulty adjustments.
https://www.alloscomp.com/bitcoin/calculator

What're your mean "difficulty adjustments"?
Can you explain for me?

Sure, I'll explain it for you.  I'm purposefully leaving out a ton of details and only giving you a high-level overview of things.

The Bitcoin network strives to add 1 block to the block chain every 10 minutes.  To accomplish this, it sets a target difficulty.  Every 2016 blocks that are added to the chain, the difficulty is recalculated.  If the average time to find those blocks is found to be under 10 minutes per block, the difficulty is increased.  If the average time is greater than 10 minutes, the difficulty is reduced.  If the average time is exactly 10 minutes, the difficulty remains the same.

In general, the more power that is added to the network, the faster the blocks are found, and the difficulty increases to compensate.

[leechenlua]

how many do me earn with KNC Neptune 1500GH/s?

$26 per day less the cost of electricity. That declines every 12 days (on average) with difficulty adjustments.
https://www.alloscomp.com/bitcoin/calculator

What're your mean "difficulty adjustments"?
Can you explain for me?

Sure, I'll explain it for you.  I'm purposefully leaving out a ton of details and only giving you a high-level overview of things.

The Bitcoin network strives to add 1 block to the block chain every 10 minutes.  To accomplish this, it sets a target difficulty.  Every 2016 blocks that are added to the chain, the difficulty is recalculated.  If the average time to find those blocks is found to be under 10 minutes per block, the difficulty is increased.  If the average time is greater than 10 minutes, the difficulty is reduced.  If the average time is exactly 10 minutes, the difficulty remains the same.

In general, the more power that is added to the network, the faster the blocks are found, and the difficulty increases to compensate.

tks guy
I got it

[Junkbarman]

how many do me earn with KNC Neptune 1500GH/s?

$26 per day less the cost of electricity. That declines every 12 days (on average) with difficulty adjustments.
https://www.alloscomp.com/bitcoin/calculator

What're your mean "difficulty adjustments"?
Can you explain for me?

Sure, I'll explain it for you.  I'm purposefully leaving out a ton of details and only giving you a high-level overview of things.

The Bitcoin network strives to add 1 block to the block chain every 10 minutes.  To accomplish this, it sets a target difficulty.  Every 2016 blocks that are added to the chain, the difficulty is recalculated.  If the average time to find those blocks is found to be under 10 minutes per block, the difficulty is increased.  If the average time is greater than 10 minutes, the difficulty is reduced.  If the average time is exactly 10 minutes, the difficulty remains the same.

In general, the more power that is added to the network, the faster the blocks are found, and the difficulty increases to compensate.

So, in theory, a 1.1 TH/s machine will be outdated at some point, it won't keep up?

[xstr8guy]

how many do me earn with KNC Neptune 1500GH/s?

$26 per day less the cost of electricity. That declines every 12 days (on average) with difficulty adjustments.
https://www.alloscomp.com/bitcoin/calculator

What're your mean "difficulty adjustments"?
Can you explain for me?

Sure, I'll explain it for you.  I'm purposefully leaving out a ton of details and only giving you a high-level overview of things.

The Bitcoin network strives to add 1 block to the block chain every 10 minutes.  To accomplish this, it sets a target difficulty.  Every 2016 blocks that are added to the chain, the difficulty is recalculated.  If the average time to find those blocks is found to be under 10 minutes per block, the difficulty is increased.  If the average time is greater than 10 minutes, the difficulty is reduced.  If the average time is exactly 10 minutes, the difficulty remains the same.

In general, the more power that is added to the network, the faster the blocks are found, and the difficulty increases to compensate.

So, in theory, a 1.1 TH/s machine will be outdated at some point, it won't keep up?

1.1 THs not "keeping up" isn't the point. Difficulty increases approximately every 2 weeks (2106 blocks). Every machine/farm loses income when the difficulty increases. To continue to earn the same amount of BTC per difficulty adjustment period, you'd need to add new hash to match the difficulty increase... typically 20%.

At this very moment in time, 1.1THs will earn about $20 per day less electricity costs, assuming 100% luck and zero pool fees.