Questions tagged [hashpower]

The hash rate is the measuring unit of the processing power used to secure the Bitcoin network.

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5answers
24k views

Do PCI USB risers lower the hashing rate?

I have a PCI USB riser like this one: I have 2 identical video cards with one plugged directly into the motherboard and one plugged in via the PCI riser. I am seeing a hash rate of 290 KH/s on the ...
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1answer
928 views

Bitcoin mining difficulty and hash rate

On blockchain.info there is the charts that shows the mining difficulty over time and the hash rate over time. See: Hash: https://blockchain.info/nl/charts/hash-rate Mining difficulty: https://www....
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4answers
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What are the odds of discovering a block as a solo miner?

I understand that during mining, one does not discover individual coins, but rather blocks of coins, and I heard that one block equals many coins (but how many?). I am wondering though, as a solo ...
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2answers
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Mining Zcash using cluster of GPU's

I have a basic knowledge about an idea of cryptocurriencies. Recently I have read articles about Zcash. Rumours has it that it's the most profitable cryptocurrency on the scene. Me and my co-...
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1answer
99 views

How do you mathematically add and subtract hash power?

My question was how do you mathematically add and subtract hash power. I recently purchased four Antminer D3s.They all run at the average rate of 19-20 MH/s but when I go to my stats in the pool that ...
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0answers
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Zero Hashes Per Second with Diablo-D3 Miner

I'm trying to setup Diablo-D3 Miner on my computer (I'm aware that there are other solutions available, but I need something written in Java for a personal project) and I see in console I'm getting ...
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1answer
473 views

Why is Ethereum total network hashrate still increasing if there are no GPUS to buy?

The total Ethereum network hashrate is close to doubling relative to its December level. Mining difficulty is also increasing proportionally of course as the total reward per block stays the same. ...
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1answer
47 views

Bitcoin mining question about hashrate helping you exponentially

I am a total newb in the crypto mining world and was researching the profitability of bitcoin mining when I came across bitclub which offers almost 4x more profit than mining by yourself. Their ...
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1answer
179 views

Probability of block rewards

Assume that there are only three mining pools, all with the same hashing power, mining for bitcoins in the bitcoin network. Which mining pool is most likely to get the block reward? Do you all think ...
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1answer
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If BTC.com has the highest hash rate, then why is it not the only pool prodcuing the blocks? [duplicate]

with respect to : https://blockchain.info/pools BTC.com pool seems to have the highest hashpower of 5648.00 PH/s[as per https://btc.com/] .Then how is it that other pools are also able find the ...
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1answer
166 views

How is Ethash a 'memory hard' algorithm if it utilizes peak GPU memory bandwidth?

According to the Ethash algorithm described here, the computation for each nonce requires a loop of 64 iterations, where each iteration reads a chunk of 128 bytes from a pseudo-random location in ...
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0answers
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retail hardware SHA256d hash rates [duplicate]

Obviously it hasn't been profitable to mine bitcoin on retail hardware for years at this point. Nevertheless, I'm curious. Does anybody have any benchmarks on what the hash rates for retail ...
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1answer
322 views

Best ASIC miner for someone on a budget

Ive looked all over for decent ASIC miners under 150$. Ive gotten very mixed reviews on the ones Ive found and are very new to mining in general. I would like a simple ASIC usb capable of at least BTC ...
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1answer
828 views

Geographical distribution of mining power/work

Is there any information on how the mining power is distributed geographically? I.e. where the computers are located that do the work. This is important as one measure of centralization of the system,...
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3answers
7k views

Does mining with multiple computers add up?

Let's say I have four computers, each mining bitcoins at 5 Mhash/s. Is this the same as mining bitcoins on one computer with a speed of 20 Mhash/s?
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1answer
834 views

Why the nonce is difficult to find in Bitcoin?

I read many articles explain the Bitcoin POW, but every article seems copy form each other. they just indicate find a nonce start from 1, but I still confused why find a nonce number is so difficult? ...
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1answer
344 views

How many CPU's work on blockchain today?

How many CPU's are working on blockchain now? How much energy is estimated to be consumed? I read an article on coindesk saying it may surpass all other energy consumption by 2020..... seriously?
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2answers
683 views

Miner speed conversion

What is the exact ratio one would use to convert Miner speed from Hashes per second to Shares per second, assuming Difficulty 1 shares?
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1answer
6k views

How many Hashes are in a single Terrahash [duplicate]

Im looking at getting an ASIC that runs about 1 Th/s and im wondering how many hashes is equal to a terrahash?
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2answers
1k views

How does Bitcoin Gigahashes Convert to Ethereum Megahashes?

I bought 6 XFX Rx 480 8GB graphics cards and I estimate they will do 25-30 megahashes with Ethereum. When looking on Amazon for other rig ideas I was reminded that they also sell Erupters. The ...
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0answers
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How to monitor hash rate over time to diagnose issues

Running a Scrypt mining rig using GPUs. Want to know if there's a way to monitor your hash rate over time. Pool stats arent that reliable from what I understand. CG Watcher, does a decent job, but ...
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1answer
180 views

Why am I getting only about 3k to 300k hashes per second?

I have written a python script to mine bitcoin. I am however getting only 3k to 300k hashes per second Here is the code: import time import hashlib import random import string size_of_rand_input =...
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1answer
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Who witnesses a Segregated Witness transaction and what incentive do they have to witness the extended block containing signatures?

This video claims Segregated Witness is insecure because no one has an incentive to process (witness) the extended signature block. https://www.youtube.com/watch?v=VoFb3mcxluY It claims that as the ...
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1answer
5k views

Current hash rate required for one block

Now, the height of the blockchain is 485531. How much hash power is ideally required to mine block number 500000. And how much hash rate does a node require to publish a block successfully each hour?
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3answers
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How many shares need to be mined before a block is released?

How many shares need to be processed on average before a block is found? I know that "luck" can be a huge factor which is why it's not quite as simple as that. I ask because I'm starting my own pool ...
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6answers
27k views

Why can't they use super computers to mine all the bitcoins?

I have very limited knowledge of bitcoin, but, I hope you don't mind my asking this question: As I understand it, "mining bitcoin" requires "significant" computational prowess. A lot of dedicated ...
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2answers
330 views
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1answer
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How fast could AlphaGo mine bitcoins?

This question resulted out of a shower thought. In my naive understanding, both, training neural networks and mining bitcoins require a lot of math crunching that is best offset to ASICS and GPUs. ...
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1answer
441 views

How can someone mine bitcoins at billions or trillions of hashes per second when the nonce is only 2^32 in size?

According to another similar question on Bitcoin Stack Exchange, https://en.bitcoin.it/wiki/Block_hashing_algorithm shows how the mining algorithm works for Bitcoin. The problem is, it shows the ...
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2answers
296 views

Sustainability of current hashing

I'm a bitcoin/blockchain layman. I'm just getting my head around the hashing of blocks and the increase in difficulty (number of zeros) required as more miners get involved. I understand this is to ...
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1answer
10k views

What is the unit “Th” as in Th/s? [duplicate]

I keep seeing this everywhere, but it seems impossible to search. What does Th stand for? What does it mean? How do you calculate the Th? For example, "The 13.5 TH/s is $2773.28 US". What does that ...
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2answers
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What hashing speed does my hardware have?

I'm checking this page to know what hashing speed my hardware has. But there's no explanation about the acronyms. For my Core 2 Quad Q9650, what's the expected hashing speed?
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2answers
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Is there any punishment for Having more than 50% of the mining power of the network

I am just curious about it. In history once it happened That GHASH.io owns 52% mining power, he was malicious and sell 5% to other miner. Bitcoin community keep watch on everything?
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1answer
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How much is this in GH/s? [duplicate]

I Hope i can get some help from you. when i have 2.43 TH, how much is this in GH/s? I'm complete confused, cause i tried to find out, how much is this. Can someone tell me how much GH/s this is at ...
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1answer
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How to quickly check your mining speed?

Is there some website that provides some webminer or other way for a person to check their mining speed without actually joining any pool or doing solo mining? Alternatively, are there some miners ...
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1answer
510 views

Inconsistent mining profitability calculations

I am gathering some btc details from coinwarz api as follows Bitcoin difficulty: 711697198174 Bitcoin reward: 12.5 My personal hash rate: 1.425 TH/s I then try to calculate amount of seconds it ...
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1answer
2k views

Need Guide: what is the hashrate for ZOTAC P106-100 6GB GDDR5? [closed]

One vendor is offering 20 GPUs and each $224.00 . Is it good card for mining ETH and what is the best hash for this? Please let me know your experiences. Is it worth to buy for ETH or other coins?
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2answers
7k views

How fast does a processor have to be to mine bitcoins [duplicate]

I have a MacBook Air running 10.7(Lion) with an Intel Core i5 processor I want to try to mine bitcoins for fun. I understand that I alone will probably not be able to get any bitcoins from mining so ...
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1answer
2k views

Why does merely having Windows Media Player open double my GPU hashrate?

I'm using poclbm to mine under Windows... processor is an AMD A6-3400M with integrated Radeon HD 6250G GPU. When Windows Media Player is closed, I get a rate of 16 megahashes/second, but when it is ...
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1answer
322 views

What concerns arise from the heavy miner concentration in China? [duplicate]

As per an Business Insider article last year, approximately 73% of the hash power comes from China. Over 50% just by the top 3. If coordinated, they could cause havoc. Is that a concern to anyone?
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1answer
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What mining performance can we roughly expect from the Intel SHA extensions of the upcoming Skylake processor architecture?

Intel is scheduled to release their new x86 SkyLake microarchitecture in Q3 2015. Among other interesting features, it will introduce SHA extensions that will allow hardware acceleration of the Secure ...
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0answers
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What's a good repo to fork if you want to create a blockchain like a “Math” coin or Curecoin. (mining equations, not hashes)

I want to create my own crypto currency and I want to know what's the best github repo to fork when it comes to making a blockchain that's based off of getting the miners to do mathematical ...
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2answers
721 views

Difficulty set by pools

Can we argue that, since the difficulty set by pools is lower than the actual one, "old" hardware remain profitable for longer and thus are used for more time. And this, indirectly, increases the ...
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1answer
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Is it normal for my hardware hashrate to vary by 15% but still achieve the advertised average?

I have an Antminer S1 and an Antminer C1. They both work as advertised and achieve a three hour hashrate average of 200 Ghash and 1000 Ghash, respectively. However, within any given second they hash ...
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2answers
7k views

Solo mining requirement to win a block everyday?

What's the hash power requirements to solo mine and win at least one block a day? Two cases (with 10% luck, means mining requires to iterate 90% of unsuccessful hashes), Mine 24 hours a day and win ...
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1answer
2k views

How is the probability of winning a block calculated from the difficulty?

I have problem finding this. The Bitcoin wiki mentions the probability here, but only with a link to the current value on BlockExplorer. The wiki page on difficulty doesn't mention the formula for ...
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3answers
116k views

How many hashes create one Bitcoin?

Irrespective of the length of time required to calculate one hash, how many hash operations are required to produce one Bitcoin?
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Hypothetical Scenario - How long does a network correction take?

Hypothetical scenario: If China decided to stop bitcoin and forced all electrical companies to stop generating electricity (unlikely I know, but work with me for a minute), that I assume would force ...
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4answers
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What is “If ghash.io hits 51% people would just leave them?” referring to?

I am watching video that explains original Bitcoin whitepaper by Satoshi Nakomoto. I totally understand that as long as 51% of the CPU power is legitimate then using bitcoins is safe. But then the ...
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2answers
162 views

Will Bitcoin scaling affect the amount of hashing power required to keep the network secure?

In Mastering Bitcoin Andreas Antonopulous asserts that "Bitcoin can scale up, achieve broader adoption, and remain secure without any increase in hashing power from today’s level." Is this really ...