32 votes
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Why do miners go offline?

One of the most common reasons for which miners go offline is when their profitability drops below the cost of electricity - this could either be the result of the BTC price dropping, or their local ...
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  • 16.5k
29 votes
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Does bitcoin miner heat as much as a heater

A device that consumes N watts of power (and doesn't output electricity or some other form of energy) will eventually produce N joules of heat per second. Thus, if your goal is converting electricity ...
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23 votes
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Current FPGA Competitiveness

First a bit of perspective on FPGA mining. ​ Around 2011 some miners started switching from GPUs to FPGAs, (Field Programmable Gate Arrays), after the first implementation of Bitcoin mining came out ...
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22 votes
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What does it mean for a cryptocurrency to be ASIC-resistant?

It means that there will be no significant speedup by implementing the algorithm in an ASIC, as compared to a CPU based implementation. This is usually achieved by requiring a lot of memory, which ...
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19 votes

Why would anyone sell a Bitcoin miner instead of just mining themselves?

The difference is that with cloud mining, all you are doing is lending the company money. And you are expecting them, for no rational reason, to pay you back an interest rate higher than they would ...
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15 votes

What does it mean for a cryptocurrency to be ASIC-resistant?

An ASIC is another way of running a program or calculation or what have you (in our case mining) using a PCB/Hardware instead of Software running on a general purpose computer. GPUs are technically ...
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  • 261
12 votes

Does bitcoin miner heat as much as a heater

It may be practical to use a miner to provide some of the heat for your home, bringing some miners into your home during the cooler months and moving them elsewhere during summer. It's pretty much 100%...
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9 votes
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What portion of the mining process does an ASIC perform?

TL;DR: ASIC input/output is the bold text below. No, the ASIC does not assemble a block. The block is assembled by a mining pool server. If you are solo mining you could let bitcoind assemble the ...
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  • 8,319
9 votes
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How much time in average does it take for an simple PC to create block?

The answer is constantly changing, but this is something you can calculate yourself. Look up the current Bitcoin difficulty value. Right now it is 460,769,358,091. Let's use scientific notation: 4....
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9 votes

Why would anyone sell a Bitcoin miner instead of just mining themselves?

There's a couple of reasons I can think of: They might not think mining is profitable and are simply looking to sell hardware and treat BTC miners as a good target market, media attention probably ...
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  • 191
8 votes
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Higher cost running Antminer S9 w/ APW3++ when running at 220v?

The AntMiner S9i 13.5 TH/sec model requires 101.5 Amps DC. Since power (watts) is equal to voltage multiplied by amps, the total power consumed by the AntMiner is 1218 watts (+/- 10%). Note, this is ...
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7 votes

Is it possible to convert Bitcoin Miner to Litecoin Miner?

No, you can't. And this has nothing to do with the operating system. Your hardware has a bitcoin ASIC chip made only for doing Sha-256 calculations. Litecoin uses the Scrypt algorithm. Sha-256 and ...
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  • 8,319
7 votes
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What mining performance can we roughly expect from the Intel SHA extensions of the upcoming Skylake processor architecture?

Let's try to make a rough estimate. Intel's article Intel SHA Extensions gives some details on these instructions as well as sample code. The main feature is the sha256rnds2 instruction, which ...
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7 votes
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Overclock Antminer U3 running on raspberry pi

I set up my rasp pi b+ and U3 mining rig using the instructions in this forum post, with screen and cgminer. The command relevant to over clocking the raspi that I used is the following: sudo ./...
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  • 186
7 votes

Is bitcoin the most powerful computer network in the world?

bitcoin had more power than the top 500 supercomputers This is a nonsensical comparison. Sure, nothing compares to the aggregate of all Bitcoin miners in quickly computing the last 32 bits of the ...
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7 votes

Does bitcoin miner heat as much as a heater

Heat Quality Not all heat is the same. The earth maintains a fairly constant average of 10 C near the surface, but you can't boil water with that. So the temperature of your heater makes a big ...
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6 votes

Why can't someone build a custom computer and win the reward for a few days?

Lets see, following on from the other answer, you're going to need 6,400,000 TH/s. Currently you can buy the Antminer S9 which will give you about 13.5 TH/s, so you'll need a mere 475000 of them. If ...
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  • 161
5 votes

Can I damage my computer by mining bitcoin?

For people reading through this in 2017+: Times have changed and a lot of higher end cards are now far more power efficient. I'm mining ethereum with a 1070 FTW card and I get a solid hashrate around ...
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  • 151
5 votes

Why are there different mining hardware for different hashing algorithms?

The hardware you are referring to are called Application Specific Integrated Circuits (ASICs), and they are named that for a reason. It's because they are not general purpose computers like desktops, ...
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  • 8,724
5 votes
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sp20 jackson vs Bitmain Antminer S7 for personal bitcoin mining

You are overlooking a very important part of the costs, that you already mentioned. The energy! Roughly at 13.0 cents per Kw/h your yearly energy costs are: Scenario one: 21 x 1.2Kw x 24h x 365d x $...
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  • 216
5 votes

How to generate 107 th/s

I'm not sure if the term "hardware" properly describes the scope you are asking about. To reach a hashrate of 107 TH/s, you'd need at least 9-10 ASIC miners at a total purchasing price of more than $...
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  • 63.4k
5 votes

how long can it take me to get 1 BTC on mining speed 30.9945H/s and 72.99451H/s respectively

It would never, ever happen. The increase in difficulty and the reduction in mining reward would mean that you would never, ever accumulate anywhere near 1 BTC with a mining speed that low. You would ...
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5 votes

Why do miners go offline?

Are there any more reasons why a miner might switch off his/her system given that the complete process is automated? I can think of a few more reasons a mining operation would be disrupted, they are ...
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  • 17.3k
5 votes
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Someon offered me btc mine trough his mining device

Yes, it's a scam. Don't send them anything.
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  • 1,992
4 votes
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Isracoin: What hashrate should I be getting with intel core i5?

Assuming that IsraCoin uses the Scrypt-Hashing algorithm as suggested in the comments on the question, I found this hardware overview table on Litecoin (which also uses Scrypt). The table lists a ...
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  • 63.4k
4 votes

Which is best for mining bitcoin?

If you don't already agree with the above answers and understand why they are true, I recommend strongly rethinking the idea of mining. Before investing a single cent into mining, please invest in ...
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4 votes

Where can I find a full list of all Bitcoin mining hardware ever used?

https://en.bitcoin.it/wiki/Mining_hardware_comparison and https://en.bitcoin.it/wiki/Non-specialized_hardware_comparison are the canonical lists. I'm not sure that will be useful to you; there's ...
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  • 28.7k
4 votes
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When did the ASIC mining era begin?

Jeff Garzik received an Avalon miner on january 30th, 2013 and posted pictures at http://garzikrants.blogspot.com/2013/01/once-upon-time-in-china-package-shipped.html and http://garzikrants.blogspot....
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  • 8,319

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