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I see there are 2 mining software programs that support CPU mining of Bitcoin (Awesome Miner, EasyMiner) and 3 mining software programs that support GPU mining (Multiminer, Awesome Miner, EasyMiner).
There are tons of other mining implementations that allow cpu/gpu mining... minerd, cpuminer, bfgminer,... Maybe you'll have to use an older version, or make sure you use the correct parameters when compiling to enable cpu/gpu mining. I'm pretty sure you could even find the exact commit where cpu mining was removed from bitcoin core and re-integrate it so you could mine with bitcoin-qt.
The thing is pooya87 and NotATether are correct: if you use a cpu/gpu/fpga to mine, you'll have allmost 0 chance to hit a block. Even if you'd join a pool, the minimum difficulty of a share would be so high you'd solve almost no shares and you'd probably would not make enough sats to withdraw.
The keyword here is "allmost": theoretically, there *is* a chance... But if you'd do the actual calculations, you'd see that on average it would take millions of years to solve a block... I did these calculations in the past a couple of times, but they are quite time consuming so i won't repeat them. Here's the last time i gave somebody an indication:
To give you guys a "real" idear about the odd and timing, it might be a good idear to read the wiki
time = difficulty * 2**32 hashrate
where difficulty is the current difficulty, hashrate is the number of hashes your miner calculates per second, and time is the average in seconds between the blocks you find.
source:https://en.bitcoin.it/wiki/Difficulty
the current difficulty is 75,5 T, that's 75.500.000.000.000
You can get to run your sidehack R909 @ 2,1 Th/second
when you're talking about a cpu or a gpu, you can look here:
https://en.bitcoin.it/wiki/Non-specialized_hardware_comparison, but the fasted cpu hashes @140Hh/s and the fasted GPU @2568 Mh/s (those numbers are acutally quite old, but i would be supprised if new cpu's and gpu's have a SIGNIFICANT difference in the outcome of the calculation)
So, a lottominer, the R909:
time = (75.500.000.000.000 * 2**32)/ 2.100.000.000.000 = 1.544.143.004.038 seconds = 25.735.716.733 minutes = 428.928.612 hours = 17.872.025 days = 48.964 years
So, on average, at current difficulty, it would take you about 50 thousand years to hit a block with an R909So, a gpu:
time = (75.500.000.000.000 * 2**32)/ 2.568.000.000 = 126.273.376.498.442 seconds = 2.104.556.274.974 minutes = 35.075.937.916 hours = 1.461.497.413 days = 4.004.102 years
So, on average, at current difficulty, it would take you about 4 million years to hit a block with the "best" gpu in the benchmarkSo, a cpu:
time = (75.500.000.000.000 * 2**32)/ 140.000.000 = 2.316.214.506.057.142 seconds = 38.603.575.100.952 minutes = 643.392.918.349 hours = 26.808.038.264 days = 73.446.680 years
So, on average, at current difficulty, it would take you about 73 million years to hit a block with the "best" cpu in the benchmarkThere are all averages offcourse... yes, in theory, there *is* a chance of hitting a block with an rpi whilst cpu mining for a couple of seconds... The thing is that people are very bad in interpreting the odds, as long as they see a number and the word "average", they think there's an actual possibility of hitting a block with a cpu/gpu, whilst in reality their odds are sooooo small, they are so close to zero that you can probably just round them down to zero to begin with... You'd probably have better odds of getting married, going for a swim before the ceremony, being bitten by a shark at the same day as being hit by lightning, winning the lottery and getting into a car crash on your way to the hospital (i didn't do the exact math tough).
