So 1GH/s is the highest speed to expect from my 295x2? Well that's disappointing to hear and ridiculously low, but thanks for the info.
Yup... GPU mining of BTC is long since dead. One little Antminer U2 USB stick will do about double the hash of those two Radeons, and use a hell of a lot less power. One of sidehack's new USB sticks (based on the BM1384 chip) will do about 15 times the rate. As Phil said, take a look at some alt coins. Heck, you could even setup your rig on MRR and let people rent it out. |
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Definitely going to pass on this one. 8TH/s in a standard ATX tower case? 3x1600W PSUs stuffed in there as well? You'd need to have a couple jet turbines attached just to remove the heat fast enough. The heatsinks alone required for this thing would make it virtually impossible to stuff into the form factor.
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I decided to try my hand at Undervolting the S3, I would like to play with the S5 but am hoping the second hand prices will come down a bit first.. Although there are posts around that say you can change the core voltage using the Advanced setting field, like some others have found on my S3 & S3+ it seems to make no difference to the voltage. I wanted to be able to easily adjust the voltage so I soldered in 2 x 4 channel 5K digital pots across the VFB resistors. These are setup with an Arduino, which also measures the voltage set.. http://www.slotforum.com/forums/uploads/1438442843/gallery_2150_2322_164157.jpgIn practice I have just rediscovered what other have found, but it's good to see the numbers for yourself.  The Standard S3 with 218.75MHz clock had a core voltage of 0.8V hashed at about 440GH & took 321W at the wall giving J/GH of 0.73After trying a lot of frequencies and voltages I decided it was possible to continue at 218.75MHz with the voltage reduced to 0.73V. This gives a small number of hardware errors .001% but improves the J/GH to 0.65. I soldered 4K7 resistors into the S3 an am letting it run, while continuing to play with the S3+ with the digital pots. At my electricity cost this moves me from Break Even to about £1 Week profit. I am happy with this for the moment as it's buying BTC and my Wife is happy as it's drying the washing. As would be expected as you drop the frequency and Core voltage the efficiency increases and the J/GH drops. The best I have seen was at 125Mhz, 0.64V Core Voltage, giving a hash of about 254GH which is J/GH of 0.48. This was with 270 Ohms across the VFB resistor and at this point I run out of adjustment on the core voltage as we are very close to the TPS533355 0.6V reference voltage. However I am actually surprised that the chip was still hashing at this voltage. I could probably squeeze a slightly better result by doing away with half the DC-DC converters and moving to 4 chips per, as the currents are now much reduced. I may try this later? Rich Funny that you mention the DC-DC converters as those were the original problem with the S3s . When Bitmain first announced the S3, they were promising 504GH/s hash rate. Later, they tuned that down to 478GH/s and finally on launch, they were only 440GH/s. All because the DC-DC converters they obtained were unreliable and shoddy. Sure, some of the units will hash at 504GH/s (one of mine has been for a year now). Some of the others won't even hit the advertised 440GH/s (one of mine has to be down clocked to run stably at 400GH/s). |
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You still haven't addressed the questions posed. What do you mean by "partner with you"? How much free power do you have access to? What are the terms of the partnership? What kind of collateral are you willing to put up to guarantee that anyone who accepts this partnership doesn't just end up getting screwed (you're brand new here)?
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No, what he's saying is that it only APPEARS 70PH/s went offline. It's called statistical variance. Nobody actually shut down 70PH/s and then turned it back on. The network went for an hour without finding a block? So? That's only at 600% if you use the 10 minute expected solve time. Will it happen often? No, but it's sure as hell going to happen. EDIT: Oh, and by the way... for the math challenged... if the entire network dropped 60% (from 400 PH/s to 160PH/s), assuming it did so immediately at the difficulty adjustment and that adjustment is the current network difficulty of 52278304845.59168243: 2^256 / (((2^224 - 2^208) / 52278304845.59168243) * 160000000000000000) = 1403.35647
At 160PH/s and current difficulty, the network would expect to take 1403.35647 seconds to find a block. Therefore, you'd expect the network to take 32.74498 days to find 2016 blocks. |
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Sure would be helpful if OP actually gave a bit more information. What do you mean by "partner with you?" How are you getting "free" power, and how much power do you have access to? What I find even funnier is this other post by this user: https://bitcointalk.org/index.php?topic=1135578.0. Apparently he's got free power in a datacenter. And, supposedly in that thread he's got 7TH/s of gear, not the 3TH/s he's claiming here. |
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Unfortunately, it really is dependent upon the hardware running it as well. Reindexing requires everything to be verified to ensure it wasn't corrupted, and fixed if it was. With ~50G of data to parse, it's going to take a while, regardless of which OS you're using. Of course, using an OS that can manage these tasks better would help (hint, it isn't anything MS is producing), but even so, you're hamstringing yourself if you're running some old dual core box with minimal RAM (not sure that you are, this was just an example).
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I suppose I could make some pretty charts/graphs/whatever... or I could just supply the data and let those who are far more inclined at such tasks take it and run. As for including other pools, I had considered it. However, I've not decided which pools I'd compare. There was a thread on here last year where somebody was comparing p2pool to Eligius and GHash.io (I think), but that thread ran its course and I'm not sure if the author is even still mining - all of his data was based on S1s on those pools. There's another guy who's doing his own comparison of different pools here: https://bitcointalk.org/index.php?topic=1059040.0. I'd love to give him my data points so he could include the results of NastyPoP and standard p2pool in his comparisons, but he hasn't really seemed too interested in it. Are there any pools in particular you'd like to see added? I'd prefer to stay away from the big ones (AntPool, Discus Fish) because I don't believe in adding any more hashing power (albeit rather minuscule in comparison to their totals) to the two largest pools - both of which use software that has caused a forked chain when BIP66 went into effect and mine empty blocks, even with thousands of transactions waiting to be confirmed. |
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I'm curious to know what exactly you're paying for IXC mining? The last generated coins were mined quite some time ago, so there are no new coins for finding blocks.
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Apparently I've been slacking ... 3 weeks behind. Sheesh. Overall, p2pool is on the upward side of a good luck swing. The week ending 7/17 was a bad week at only 72% luck, but the last 2 weeks p2pool made up for it. This week shows p2pool at over 130% luck and the past 30 days, p2pool is over 105%. In the past couple of weeks, with the good luck, NastyPoP has beaten standard p2pool payouts. Even with luck over 130% this week, standard payouts didn't even meet expected earnings. Here are the numbers for the past three weeks: 7/10 - 7/17 NastyPoP - 0.02054230 BTCNastyP2P - 0.02884854 BTCExpected - 0.03493028 BTCLuck - 71.40% 7/17 - 7/24 NastyPoP - 0.04771791 BTCNastyP2P - 0.04040042 BTCExpected - 0.03465856 BTCLuck - 162.79% 7/24 - 7/31 NastyPoP: 0.04298881 BTCNastyP2P: 0.03145364 BTCExpected: 0.03401418 BTCLuck - 134.83% OP updated. |
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Every pool has luck swings... it's the nature of the beast. You just feel those effects a bit more on the pools with lower hash rates because of the inherently long time to solve a block in the first place. For example, if the pool expects to find a block every 24 hours, that rare 700% block is a full week with no block finds. If that pool is a PPLNS payout, you've lost work unless the "N" is greater than 700%, which is highly unlikely. As far as I know, kano's pool has the highest N value at 500%. Of course the opposite is also true. You can make more than expectations when that pool is having a good luck swing.
P2Pool has treated me quite well, even with the swings in luck.
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It's more profitable because you set the price. You can set it higher than expectations. The renter might be mining some alt coin in hopes of a pump and dump. The renter might be using your gear to solo mine and hoping for a 25BTC hit. Who knows what prompts their behavior...
How much do you earn with MiningRigRentals during periods when rig is not rented out? Depends on which pool you set your miners to mine on when not rented. When not rented, they behave as any other miner on whatever pool you've chosen, and hence all typical things apply (like fees, etc). |
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So... I wanted to test how rigs on MRR would work out with your pool. I assigned my rigs to mine here. Unfortunately, they didn't switch over very well - I got about half my expected hash rate. Since I'm traveling and don't have physical access to my miners, I wasn't able to power cycle them (which has sometimes helped), so I'm not sure if this is an issue with MRR and your pool, or my miners just misbehaving (they tend to do that when I have to travel for work... just like kids... dad leaves and they throw a party  ). When I get back this weekend, I'll try again and let you know. |
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i see only 1 worker in the cmd window but i have 3 other workers total of 4 different btc addy mining at my node. if i do not set diff manually, all of the 4 different miners diff will be the same following the btc add with the highest hashrate/diff.
eg.
"New work for worker! Difficulty: 12192.630174 Share difficulty: 5341839.751636 Total block value: 25.019255 BTC including 100 transactions"
this started since the update. before it will show 4 workers work in the cmd window & their individual diff assigned automatically.
before eg.
New work for worker! Difficulty: xxx Share difficulty: 5341839.751636 Total block value: 25.019255 BTC including 100 transactions
New work for worker! Difficulty: xxx Share difficulty: 5341839.751636 Total block value: 25.019255 BTC including 100 transactions
New work for worker! Difficulty: xxx Share difficulty: 5341839.751636 Total block value: 25.019255 BTC including 100 transactions
New work for worker! Difficulty: xxx Share difficulty: 5341839.751636 Total block value: 25.019255 BTC including 100 transactions
"xxx" = to p2pool auto assigned diff to respective miner's hashrate, obviously higher hashrate higher diff & vice versa.
anyone else experiencing/noticed the same issue ?
running on core v0.11 64 bit win 7 64 bit
Your node adjusts the share difficulty dynamically. As your node hash rate increases, the share difficulty also increases. Because your shares are of a higher difficulty, they are weighted more, and thus are worth more BTC each than the minimum difficulty share. Conversely, as your node's hash rate decreases, the share difficulty decreases until it hits the network share minimum difficulty. You can avoid this by manually setting your share difficulty using the "/" parameter: where xxx is some number. If you want to guarantee minimum share difficulty, you can set that to 1 - which will in turn mean your worker will submit network minimum difficulty shares. |
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Crap... biodom took my pick Um... guess I'll go with 0.76 to 1.00 |
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Running an S3 at default will only cost you about $0.82 a day with $0.10 per kWh. My 5 little U2s running with an rPi controller costs virtually nothing (about $0.04 a day).
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After 20 more people hit . |
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Well... that's not entirely true. Let's assume you've got a single S3 solo mining. Your chances of hitting a block are about 1:5907. Chances of winning $10,000 in the powerball are about 1:648976. Whereas that powerball ticket is only good for a single drawing, your miner is good until you turn it off. Let's say you've got 5 U2s like I do... the chance of hitting a block is about 1:259875. Still better odds than hitting that $10,000 in the powerball. And, once it hits, it can hit again. That lottery ticket is a one-shot deal.
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LOL... we'd ALL like free power to run our gear . Looking at OP's posts he's promoting his own BTC faucet... maybe that's the source of his free power? LOL... revenue earned from his faucet pays the datacenter costs. With only 7TH/s of gear... let's assume 7 S5s. 4.13 kWh of power use. At $0.10, that's $9.91 a day. |
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Yup. Crazy days. I've been using this thing the entire time I've been trying to sell it, but I'm still going to charge you the full retail price, which by the way is now higher than what it was had you bought it when I first offered it for sale.
Seriously, these things are collectibles... they aren't classic cars... a Babe Ruth rookie card in pristine condition... they're a mass produced commodity.
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