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I started using cpuminer with slush's pool. I have no external ASIC devices or anything, just my AMD processor, though the processor doesn't really matter to this question. I did the math, and here it is:

2 Mhash/s.
About 7GHash for 1 BTC I'm guessing. (this is all approximate)
7Ghash / 2 = 3.5Ghash. (2 is my Mhash/s)
That means it would take 3.5 million seconds to get 1 btc (Worth I think 600$ cad) with my comp running to get 1 BTC. I think.
Approximately.
So that's 40 days or 960 hours. I play minecraft a ton. No problem.  ;)

I just want to know if my calculations are correct, if I run this while playing minecraft for a total of approximately 1k hours I would get 600$?
I know there is tons of factors but just before this I got one (yay!!!) thing, which is feedback, and I checked Slush's pool (which I'm using) and it says Estimated Reward: 0.00000001 BTC.
Now I'm thinking...hmmmmmm..... one hundred millionth of a btc from...idk...
Can someone help me with my calculations? I'm still getting 2 MHash/s and idc if you say it isn't worth it, I play minecraft so much idc lol.
Also if anyone knows how to speed up my MHash I'm pretty sure I'm supposed to be getting more. AMD A6-3600 APU with Radeon HD Graphics 2.10Ghz. Latest SDK or whatever. Idk. I looked through a ton of tuts. My bat code I'm using is:
minerd.exe -o http://api.bitcoin.cz:8332 -u worker -p pass -a sha256d -R 2
It goes to stratum and gets some error unknown method getblocktemplate, It must be normal cuz I tried this on two computers same Mhash and same error. Anything I'm doing wrong or if my calculations are wrong then please say so. Any help appreciated. I want to make money for being on my computer, I use it a lot so might as well get some money X3
Thanks in advance  :)

How did you calculate this?  There is no way you will ever find a block using a CPU.
What website did you use?

No, no, and no. Your maths is really terrible. Very terrible. What do you mean 7GHs for 1 BTC? Where did you come up with such a figure?
No, you cannot speed it up, since mining BTC with a CPU is shit, and it will do nothing except blow up your PC. You aren't even sure what you're talking about, you're like "I don't care and I don't know".

You are assuming 7Ghash will find 1btc in 1 second.   :-\

Ummm... Vod... Can you explain his calculation? I don't even understand. Why divide 7GHs by 2?

He is assuming that 7GH will create 1btc in 1 second.

He then compares his rate (2MH) to the 7GH to come up with a divisor of 3.5 million.

So he then assumes his 2MH will create 1btc in 3.5 million seconds.

I sure as hell wish I could create block with just 7 GH/s. I could have saved a lot of money and just kept my old jalapeno instead of investing in antminer s2's....

Without Exaggerating, you can expect to earn 1 BTC in 50,000 years in a pool, if difficulty NEVER goes up.

I ran some numbers for you here:

https://bitcoinwisdom.com/bitcoin/calculator

Assuming you're not paying for electricity, and difficulty escalates at very close to the same rate that it has been, you can make almost a penny by the end of the year.

Assumption:
0.002 GH/s  = 2 MH/s
Hardware costs:  0
Setup costs: 0
Electricity usage: 0   -- If you plug in anything else the calculator cuts off the because you're mining at a loss.

You profit is in the lower right corner.  Almost a penny.

Profit in USD

Date   Difficulty   Revenue   Profit   Return
2014            0
7-15 – 7-24 (10 days)   17336 M   0.00134   0.001313   0.001313
7-25 – 8-6 (23 days)   20110 M   0.001402   0.001374   0.002687
8-7 – 8-19 (36 days)   23327 M   0.001209   0.001185   0.003872
8-20 – 9-1 (49 days)   27060 M   0.001042   0.001021   0.004893
9-2 – 9-14 (62 days)   31389 M   0.0008983   0.0008803   0.005773
9-15 – 9-27 (75 days)   36412 M   0.0007744   0.0007589   0.006532
9-28 – 10-10 (88 days)   42238 M   0.0006675   0.0006542   0.007186
10-11 – 10-23 (101 days)   48996 M   0.0005755   0.000564   0.00775
10-24 – 11-5 (114 days)   56835 M   0.0004961   0.0004862   0.008236
11-6 – 11-18 (127 days)   65929 M   0.0004277   0.0004191   0.008655
11-19 – 12-1 (140 days)   76478 M   0.0003687   0.0003613   0.009017
12-2 – 12-14 (153 days)   88714 M   0.0003178   0.0003115   0.009328
12-15 – 12-27 (166 days)   102 G   0.000274   0.0002685   0.009597
12-28 – 1-9 (179 days)   119 G   0.0002362   0.0002315   0.009828

Yes, that is approximately correct. Assuming there is no variance and you always get 100% BTC profitability, and there are no orphaned blocks, you would earn a sum of 1.062BTC with 2MH/s at current difficulty in 50,000 years.

Assuming that the current difficulty permanently remains the difficulty for the entire time that you are mining, and that the block reward stays at 25 BTC for the entire time you are mining:

The current global hash rate is approximately 114,179.536 Terrahash per second.

On average the global network solves one 25 BTC block every 10 minutes.

There are 60 seconds in 1 minute.

(114,179.536 Terrahashes / 1 second) * (60 seconds / 1 minute) * (10 minutes / 25 BTC) = 2,740,308 terrahashes per BTC

This means that one BTC is generated for every 2.74 exahashes that are computed.

There are 31,536,000 seconds in a year.

If you are computing hashes at a rate of 2 Megahashes per second then it will take you:

(2.74 exahashes / 1 BTC) * (1,000,000,000,000 megahashes / 1 exahash) * (1 second / 2 megahashes) * ( 1 year / 31,536,000 seconds) = 43,442.4 years per BTC.

This means that if you could actually earn with your 2 megahash per second processor any completed shares that the mining pool would be willing to acknowledge, then it will take you approximately 43,442.4 years to earn 1 BTC.

Note that during this time the difficulty (and therefore the global hash rate) will very likely increase, and every 4 years the block reward will be cut in half.  Therefore, realistically it will not be possible for you to earn 1 BTC with only 2 MH/s unless something catastrophic happens and the bitcoin mining difficulty drops an enormous amount.

little correcion:


still no problem?  :D

The short answer: no, you are not right.  Check out DannyHamilton's explanation.  His math is based on things as they are right now.  Since things change, including rising difficulty and block rewards, you will never mine 1BTC with your CPU.

Of course, you could always try playing the lottery and solo-mine using that CPU.  Who knows... maybe you'll hit the jackpot and crack the block :)

As others have allready pointed out your calculations are wrong. Sad but true [1]. However since you play Minecraft a ton there might be a way for you to make 1 BTC in 50 weeks. The Server Minecraft CC [2] pays you for mined/placed blocks upto 0.02 BTC per week. However keep in mind that mojang plans to change the EULA and thus this "deal" might no longer be valid in the future.



[1] total unrealted, just had a clown for breakfast https://www.youtube.com/watch?v=A8MO7fkZc5o
[2] http://minecraftcc.com/index.php

So much wrong with the OP where to start?

First of all, highly unlikely your getting those hash rates with just a CPU.  As for your bitcoin generation calculations.  ALL WRONG I'm afraid.

AWESOME!
That server is great. I made 10 cents in an hour.
I read a thing that I misinterpreted and it actually said 7 GHash/s for 24h would get 1btc. So I screwed up. My computer is rlly loud for some reason with cpuminer loading and i got 27 hundred millionths of a btc when i could have went to the chain of 20-60 hundred millionths of a btc. no extra electricity, no wait...tons more. heh. 50000 years. well, lets make a guiness world record and pass my computer down, running, cpuminer, and have generations use it till the 99999th generation gets 600 usd.
thats a good idea.
so in short it sucks.
so is there any way i can get it to a rate that actually earns something? like really. can i screw with the flags in my bat code to make it run faster? its using sha256d...not scrypt..

It won't help. You would never get close to 1 Gh with just a CPU and a GPU. 2 Mhs with a CPU is somewhat decent already.

Also, 7 Ghs running for 24 hours will not earn you 1 BTC. Maybe 2 years ago, but not anymore. 7 Ghs for 24 hours at the current difficulty would earn you a little over 20000 satoshis (0.0002 BTC) at the most.

The days of CPU and graphics card mining are long gone. Technology has moved on beyond that.

The only way to make a realistic amount of bitcoins is with Application Specific Integrated Chips (ASIC).  Even the old ASIC are outdated.

Unless you can purchase the newest and fastest ASIC as soon as they are available and have access to cheap electricity, you'll discover that it is more expensive to get bitcoins through mining than it is to just buy them.


Let's retry the maths with 7 GH/s this time:

If you are computing hashes at a rate of 7 Gigahashes per second then it will take you:

(2.74 exahashes / 1 BTC) * (1,000,000,000 Gigahashes / 1 exahash) * (1 second / 7 Gigahashes) * ( 1 year / 31,536,000 seconds) = 12.4 years per BTC.

This means that if you could actually mine at 7 Gigahash per second, then it will take you approximately 12.4 years to earn 1 BTC.

Note that during this time the difficulty (and therefore the global hash rate) will very likely increase, and every 4 years the block reward will be cut in half.  Therefore, realistically it will take much more than 12 years if it is even  possible for you to earn 1 BTC with only 7 GH/s.

Yeah he totally didn't say, how long 7 GH/s would have to run in order to mine 1 BTC. I remember almost exactly one year ago 7GH/s would give you 0.1 BTC every 24 hours. Good Times!

Oh boy here we go again... you are on a mining pool on 2014 seriously you think 7Ghz is still proffitable in some way? even if you dont have to pay for energy

Yeah, no.

You're calculations are very wrong.

You won't earn anything with that.

You are way off. I think your calculations are based on difficulty from years ago.

Today CPU mining will unlikely yield even a penny worth of bitcoin over a year, and you would probably spend hundreds of dollars on electricity. 

As others have already explained in details, your calculation is completely wrong.

If you really want to mine some bitcoin, you will need to buy some sha256 ASIC, which IMO is not a good investment, at least not as good as buying bitcoin directly.