on the site, it says I've got 386mh/s. On my machine I've got one running at 304 and another GPU at 97mh/s. Those figures aren't fluxuating so I'm wondering why that's not matching up with the site.
I don't think pools can directly measure your hashrate, they can only see how many shares you have contributed. Shares: you submit difficulty 1 hashes as proof-of-work to a pool, and then the pool checks to see if the hash is also full difficulty, solving a block. Since like full difficulty blocks, shares are a random problem and have variance, in one hour of sampling you may submit more or less shares than your hashrate predicts, plus rejected shares often aren't associated with your worker account and can't be added to the hashrate estimation. The absolute proof of your submitted work is number of shares, which you can verify by logging with your miner. But I find it hard to believe one worker produces 103 shares per 30 minutes for many days, another one does 84, another one does 91, and they are all identical (same clock frequency as well). The number *never* moves which makes me think the algorithm could be broken. It's too much to be a coincidence since it's been happening for ages (the hashrate, however, does move) If it was correct like on deepbit, all workers would be within 0.1% of each other in the long term. I'm seeing 20% fluctuations on GPUs that are accepting shares just fine at the same speeds (and the client shows them at nearly identical amounts of accepted shares) |
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AMD introduced PowerTune a few months back in their drivers.
Go to Catalyst control center, write 'overdrive' in the search field and set the Powertune slider to +20 if you don't want PT to be enabled at all.
At the default setting it will attempt to save energy and optimize
performance based on the GPU load by changing the clock frequency up and down.
(Bad for mining because you will want the GPU to be always at full load and frequency, good for gaming)
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The Euro and USD currencies are on the brink of collapse if their issuers don't stop defaulting on their loans.
There will be much bigger worries by then, but I'd put any significant cash reserves into gold, platinum, silver and bitcoin at the moment.
In the current economic climate I wont be surprised to wake up one morning and see the US dollar value plummet dozens of % in a day
Bitcoin and other scarce commodities will skyrocket in value if that happens, people will attempt getting ahold of anything which isn't fiat currency or unlimited paper money
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Converted to a common denominator (Radeon 6990) the total hash rate equals about 28,000 of those GPUs.
In that scenario the total power usage of the entire network is 10,500,000 watts at any given moment
(There are very many diverse GPUs, CPUs and maybe even some ASICS the network too so that's just a very rough estimate)
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I don't think the worker table is accurate at all.
It *always* shows the shares of the last 30 minutes being 1 or 2 higher than currently,
and the numbers are wildly varying across my workers
(For example one worker shows 99 to 98 shares all day, another shows 88 to 89 shares all day, another one 103 to 104,
despite all of them being identical GPUs at same clock frequencies)
The number per 30 minutes is never higher on the left side of the column which I find hard to believe
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For example a Radeon 6990 has 5.2 gigaFLOPS of computing power[1] and yields roughly 800 megahash/s in bitcoin mining. Apples to oranges. If all Bitcoin miners everywhere used Radeon 6990s, then you could say that the mining collective could compute at (big number)FLOP/s if they directed their computational capacity at floating-point problems, but right now we're computing at 0 FLOP/s, simply because it's all integer based. You can't exchange floating-point and integer operations like that. And the Tianhe-1 is computing at 0 khash/s because it only does floating point operations. That doesn't mean it can't be utilized to mine at 1,433,600 mhash/s. (7168 Nvidia Tesla S1070 GPUs at 200 mhash/s each) Of course it's theoretical, why would anyone assume otherwise |
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you guys don't actually get it. why would you want to invest like 50% more power consumption for a mere 30 mhash/s? is this a benchmark? try benchmarking actual mining efficiency.
are you sure increase for 0.2V give 50% more power consumption The more you add the quicker it adds up (exponentially) So yes, at the levels shown in this thread, 0.2V increments will result in 20-30% bigger power draws At 1.3V or above you are already crossing a negative threshold (you will be paying more for electricity than you will earn from the extra few dozen mhash/s But as long as people just want to see a 'big number' without caring how much electricity is required to produce it, go ahead.. Or the fact the VRM will die in a month. |
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Hahahaha
I hope someone didn't actually send BTC for 13 'beertokens' on this guys 'exchange'
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by the very nature of pooled mining, you
have to trust the pool operator.
Not if the pool has a pure PPS payment scheme (no shared maximum or other experiments) Then keeping blocks becomes irrelevant because you get paid for every single share regardless of round length. So far I've only seen deepbit stand up to the challenge. Their fee is a bit steep though. |
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Who cares its just stupid twitter. You expect things like that coming from them.
Who is "them" sir? freemasons |
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Therefore, it shows up as block 136,133 on my site, because we only check for new blocks every 5 minutes or so.
Doesn't do wonders for transparency IMO :| People are right to do due diligence and be paranoid because blocks really have been missing on some pools like bitcoins.lc (admins have so far decided to pay them out promptly though after being notified of the fact) Esp. for bigger miners, a 'few missing blocks here and there' can mean a lot of lost money. (Ars is a good legit pool, just saying in general) |
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Sounds like an admin-turned-greedy.
I got burned in 2 small sub-20gh/s pools like that, the owner eventually ran after he got enough blocks
Then again, a 300 ghash/s pool doing this would be news
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00000000000000001e8d6829a8a21adc5d38d0a473b144b6765798e61f98bd1d 125552
So is this the equivalent of brute forcing a 64 bit password? edit: I mean a password that is 64 bits long, encrypted with SHA-256. More than that, as explained above it equals roughly 67 bits. Then again, do remember the BTC network has GPU power equaling 146 petaFLOPS (146,407 gigaFLOPS) average as of July 2011. That's over a hundred times faster than the Tianhe-1 supercluster that held the #1 position on the top500.org list of the world's most powerful computers. |
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All at 60 to 70c except 6990s at 75 to 90
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Bitcoins.lc shares transaction fees + full block.
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Simple... Don't mine in small pools at this difficulty level unless you like the torturous variance.
Stay with pools that have at least 300-500ghash/s
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Unfortunately, I regret to say wild hyenas have ravaged my lawyer and his entire family while he was asleep. They appear to have taken the laptop that contained the bitcoins as well, and hid their booty in an airplane baggage container. Incidentally the plane has crashed en-route to Brazil. http://www.bbc.co.uk/news/world-latin-america-14137774As his sole custodian mentioned in his last will should his children perish, I will attempt to trace the hard-drive and keep the funds. My sincere apologies. With grief and sadness, Dr. Joseph Aboh Ph.D, M.D |
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If anyone is wondering why no program seems to work with the sapphire xtreme cards,
it's because they have a custom, shortened PCB and voltage regulators.
Only their own proprietary Trixx tool works for that
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This guide has boosted my daily earnings from a measly 50 Nigerian Nairas per day to $25,000 US dollars per hour. Before, we herded our cattle with prods. Now we shoot golden bullets in the horizon, and our animal friends flock ahead. Before, our children were quenching their thirst from the goats teet. Now our wells overflow with Pepsi and purple lemonade. If you wish to obtain further information on how I achieved this feat utilizing Maria's guidelines set forth in the first message, contact my lawyer for further arrangements: Mbele Mombutu officiallawyersassociation9@freemail.com |
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