Questions tagged [hashpower]

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

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1answer
448 views

How is hash rate of mining hardware calculated

The mining hardware does a double sha-256 hash of the header while mining. Is each sha-256 operation counted when determining the hash rate or is the whole sha256(sha256(header)) counted as one hash? ...
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1answer
145 views

Please help, stuck at static 24Mhash/s? [duplicate]

I'm fairly new to mining bitcoin, but I have read that using GPU can help improve performance. I currently am using GUIMiner (latest version) running on an OpenCL back-end but when I choose to use my ...
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1answer
967 views

When did the ASIC mining era begin?

I am trying to figure out when the ASIC mining era began. A Bitcoin magazine article from January 23rd 2013 announces the imminent arrival of the first batch of Avalon miners in early February. Is ...
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1answer
244 views

How can one estimate the amount of Watts that is consumed by the mining network as a whole?

I'm trying to estimate the Wattage used in mining operations over time and compare that YoY cost with mining physical materials (gold, silver, etc). I hope that the electrical impact is less than ...
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1answer
468 views

Are there numbers on how many pre-orders (or total GH/s) ButterflyLabs already received?

The whole Bitcoin world is waiting for ButterflyLabs' entree in the mining scene. Their promised products are quite revolutionary and so they can cause great fluctuations in the BTC price when they ...
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2answers
998 views

How much ASIC power has been, or is being, shipped in 2013?

Where can I verify how much ASIC mining power has been shipped, how much has been pre-ordered, when it will be shipped, and at what rates and time frames more units will be shipped?
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3answers
4k views

What can be done about the no-transaction block relayer (currently 71.123.170.150)?

An unknown major solo miner (currently IP 71.123.170.150), most likely a botnet, is relaying blocks with zero transactions. Two weeks ago this miner constituted ~15% of the network, now it constitutes ...
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1answer
1k views

What is the approximate hashrate of a human?

Which and how much mathematical operations are required for the blockheader-to-blockhash operation and how fast would a human be able to calculate a single hash? EDIT: For simplicity, I think it's a ...
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1answer
636 views

How will bitcoin stay decentralized when mining becomes extremely expensive?

My understanding of bitcoin is that the miners are the ones keeping bitcoin decentralized. What happens when only the richest of people can afford mining?
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1answer
539 views

What is the benchmark that mining ASICs are measured with to determine the hash rates?

When a mining ASIC claims to run at 1 MH/s or 10/MH/s or even 1000 GH/s, at what difficulty and with what algorithm is that measured against?
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1answer
142 views

Does having twice as many miners give you twice as much revenue?

A good friend lives in an apt that includes utilities in his rent and I'm going to lease a desk space in his pad to mine bitcoins. I have a few questions before I get started. All of the mining ...
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4answers
823 views

What is the ecological effect of increased work for the Bitcoin chain?

As more users use Bitcoin and "forced work" difficulty increases what effect does this have ecologically? It is a silly question I know. I'm just comparing let's say value or effect of using ...
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2answers
6k views

Halving reward, price effects? [duplicate]

What is the case after halving reward takes place: Would bitcoin price gets double, since its harder to mine? Would Blockchain introduces more blocks (e.g: 1/5mins)?
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1answer
160k views

How many GH in 1 TH? [duplicate]

Please tell me, is 1 TH = 1000GH?
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2answers
2k views

What happens if hash rate decreases rapidly?

Since difficulty is only adjusted every 2016 blocks, what would happen if hash rate was to decrease rapidly? Wouldn't this cause blocks to be created less frequently and also making the time until ...
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2answers
264 views

What will happen to Bitcoin when it takes years to complete a calculation?

Ok, we already experienced over the last 6yr's how bitcoin mining calculations went from mineable with a cpu, to where you need very expensive computer equipment to mine profitably. So what's going to ...
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64k views

What does the mining difficulty number really mean?

I'm new to bitcoin; please bear with me. I'm looking into mining, how it works, and how to get started. I see a "mining difficulty" from many sources and list a 3 billion something number without ...
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1answer
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BitCoin Price Index -Studies on Relation to Network Hashrate and Block Difficulty?

Are there any available studies, articles or blog posts on this topic? I am currently working on a market analysis including major bitcoin exchanges and the bitcoin price index. I'm specifically ...
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5answers
45k views

Mining pool hashrate effect on a miner's income

Newbie miners have many misconceptions about how the hashrate of the pool they mine in will affect their mining income. If a big miner joins the pool there are some unhappy miners who think that now ...
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1answer
136 views

Who recomputes and announces the difficulty in Bitcoin?

I know that the Bitcoin difficulty is recomputed every 2016 blocks (about two weeks). But who is responsible for this job and how is the new value announced to all miners. Does every miners do the ...
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2answers
207 views

How long does it take to go from 51% hash power to 100% hash power?

Once an attacker has acquired 51% hash power, is it possible to quickly get to 100% hash power by simply refusing to build on blocks created by other mining nodes and therefore discouraging mining ...
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Profit possibility for colluding with 51% attacker

The Bitcoin Wiki states "A profit-seeking person will always gain more by just following the rules, and even someone trying to destroy the system will probably find other attacks more attractive." I'...
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How do pools determine a pool-user's hashrate? [duplicate]

How do pools determine a pool-user's hashrate? It seems they would base it on the particular user's difficulty or rate of accepted shares.
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1answer
177 views

Feasibility of a “High horsepower” attack (based on difficulty -4x adjustments)

This is really Part 3 of this earlier question. Given that the QT client is hard coded to never adjust difficulty more (or less than) a factor of 4... What realistic scenario would cause the ...
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988 views

How can I mine ALT SHA-256 coins using a Bitmain S4?

The bitmain S4 does 2TH/s out of the box with no overclocking. For many alt SHA-256 coins, this can be 10% - 50% of the entire network hashing power, which would allow us to gain alt coins quickly, ...
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2answers
2k views

How can I calculate network hashrate for a given range of blocks where difficulty changes somewhere within the range?

Not sure if the title is poorly worded, but here's what I'm looking to do. If I have a range of blocks and I want to calculate the hashrate, I can do something similar to what is found here. To take ...
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2answers
144 views

How much hashpower is needed to double-spend? Is >50% a minimum?

How much hashpower is needed to double-spend coins? Some worry only about one entity getting over 50% of the hashpower, while others are complaining (at the time of writing) about an entity having ...
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2answers
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Can too big hosted mining service be mitigated by allowing customers to choose mining pool?

Let's say a company is hosting mining hardware, either hosting customers' hardware or renting out the hashes produced by hardware owned by the company, or both. So the company is physically ...
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2answers
4k views

Difference in hashrate between two GPUs

I am a gamer who simply uses his rig to mine when idle. A year ago I was getting 0.5 Ghs using a Radeon HD7970 3072MB 384bit OC Boost, then due to a technical issue I stopped mining for a few months ...
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2answers
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Difficulty Trends [closed]

As the hash power of the network continues to grow, should we expect to see a % of miners drop off because of unfavorable returns? Thus, causing the difficulty to plateau or even decrease at a certain ...
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3answers
10k views

How to calculate Hashes per Second

How exactly do you calculate how many hashes your hardware is generating?
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2k views

Why Does bfgminer Show Mh/s and Gh/s As HashRate Instead Of Kh/s

I have just switched over to mining with bfgminer from cgminer and I noticed that bfgminer displays the hashrate as Mh/s on my running version whereas cgminer displayed it as Kh/s. My GPU is a R9 ...
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3answers
794 views

Is it theoretically possible to limit the hash rate?

I am thinking of developing an altcoin that is truly asic/pool proof. I haven't tried yet (or even downloaded the source code), but I was wondering if it is possible for the network to behave in such ...
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1answer
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X11 | multiplier & maxDiff number to multiple the shares by in order to display hashrate

What is the correct formula for X11 to calculate hashrate? right maxDiff number to multiple the shares by in order to display hashrate We need hashrate multiplier and the maxdiff Example: ...
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3k views

can I improve LTC mining on this GPU?

I use CGMiner(unless there's a better one) on an AMD Radeon HD 8570D. it gets 22-23kh/s but most times I see people mentioning their graphics producing multiple megahashes. do I just have the wrong ...
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2k views

All of a sudden hashrate drops to half the normal

I usually get a nice 200 Mh/s out of my XFX 6770 clocked at 950 MHz / 300 MHz. Sometimes I'll check cgminer and see the hashrate has dropped to around 90Mh/s while temperature of the GPU dropped to a ...
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1answer
3k views

(litecoin) High hashrate but low amount of submitted shares in solo

I'm playing around with litecoin mining and have been mining at a pool but decided to mine solo using cgminer. When I mine at pools the amount of shares submitted to the pool sinks dramatically when ...
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1answer
327 views

Does variability of block solution time change as difficulty increases?

We know that the expected average time to solve a block from any given point in time is 10 minutes when the network hash rate matches the current difficulty. However, as difficulty increases are we ...