I'm a researcher on crypto-currencies. Lately, when I was examining the blockchain of Dogecoin, I found that a small number of blocks were not merged-mined, even though Dogecoin had already switched to merge-mining. Here's one example: https://www.zpool.ca/explorer/DOGE?start=972420You can see that Blocks #972415 and #972403 were not merge-mined (PoW). All other blocks were merge-mined (AuxPoW). This happened in November 2015, more than a year after Dogecoin had switched to merge-mining. I would expect all blocks to be merge-mined at this point, since a miner would be generating dogecoins for free while mining another Scrypt coin like Litecoin. In other words, it seemed irrational to be mining just Dogecoin, given that you could also have mined Litecoin. So how would you explain my observation? Were a small number of miners behaving irrationally? Or some one did the wrong setup and fixed it once they,saw the,mistake. The blocks are very close to one another. |
|
|
|
What are you mining at the moment, Monero or Ethereum? I've three RX 480 and I'm interested in knowing that which one is better to mine right now with it, monero or ethereum. Currently I'm mining ETH with 75Mh/s, but with the power of 600 Watts of the whole system, while the GPU-Z is showing overall 300 Watts for the three graphics cards. Maybe that's because I'm using a branded machine (Dell Precision T7500), it's a way too heavy machine.
A three card rx 480 setup should read about 480 watts at the wall on a k-watt meter. Your pc could have a low efficiency psu . I have two four card rig with rx 480s One does 590-610 watts for about 100mh The other does 620-630 watts for about 100mh They have same cards but two different psus one is a gold and it uses about 20 extra watts then the psu using a plat psu. You may have a bronze psu in that dell you would be using 40 or 50 watts more then a plat would. With one machine you could flip a coin to see if you should mine eth or xmr. Or just stick with eth. And buy a few xmr with some of the eth you mine. Say you have 5 eth from mining buy one xmr hold one eth. Sell three eth for btc or for cash. To me I straddle risk I have cash btc eth xmr More in cash then btc then xmr then eth |
|
|
|
thanks but I don't think it is really accurate you can't predict it
How do you mean? It's mathematical chance. math + language is hard for people to understand a suggestion is give two answers the same 10 minute answer and a one day answer. which would be to divide the 10 minute answer by 144 |
|
|
|
I think you might be missing the point. In today's market, the intent of mining with compacs is usually for educational purposes and/or fun. Anyone expecting to make a legitimate profit on compacs is either hoping to win the lottery solo mining or simply misinformed.
Anyway, spazzdla is correct. If your intent is to USB mine for whatever reason, Sidehack's GekkoScience Compac is the way to go.
In my first post i clearly indicated that the only two things those sticks are good for are instamining and learning  . I answered to spazzdla's post because i felt it kinda looked like he said it was a good thing to mine with a compac, while it can only be seen as an educational tool (in my personal opinion). Maybe i used the wrong wording in my post. That being said: if you want to learn how to mine, i don't think there's a difference between an old U2 or a compac. Neither of them will give you enough satoshi's to make a withdrawal from a pool, neither of them will have a significant chance of hitting a block, and both of them will have enough hashpower to join a pool and see some shares rolling in (altough you won't make enough to actually withdraw your profits). Just my personal opinion tough. Well a compac stick has a decent shot at a PPC block via solo mining. I know I hit a few with them. They also look pretty. They run silent when clocked to 150mhz Will you turn a profit most likely no. I don't feel like the math it is early but in my head quickly the chance of hitting 2 PPC blocks in a year with 1 stick is 10% . Can they turn a profit yes if you Hit a PPC block 2 times and you are running the stick on a work PC. ie no power cost. So a 10% to make a profit with free power is close. Now if you have free power they are much better then playing the 4 digit lottery offered in the usa. a 4 digit number in the usa gives you 5000 to 1 and costs 50 cents in some states. your cost would be 182-183 usd per year and you should hit it once every 27 years for a loss of 5000. your cost with a compac is 25-35 dollars if you run it at 8gb on a free power setup you have a 1,442,256 shot in 1 day or once every 3951 years you hit a block. collecting 600 x 12.5 = 7500 bucks you cost would be 25-35 dollars but 3951 years with normal luck is a long time.  100 sticks would be 2500-3500 usd if you could scatter them about all at free power you would hit a block in 39.51 years and collect 7500 for the 2500-3500 cash you paid for the sticks. this is actually not realistic because I froze diff at current levels |
|
|
|
this set of numbers is closer to accurate . https://bitcoinwisdom.com/bitcoin/difficultyBitcoin Difficulty: 225,832,872,179 Estimated Next Difficulty: 234,197,272,923 (+3.70%)
Adjust time: After 1828 Blocks, About 12.2 daysHashrate(?): 1,752,354,964 GH/s Block Generation Time(?): 1 block: 9.6 minutes 3 blocks: 28.8 minutes 6 blocks: 57.6 minutes Updated: 7:30 (4.8 minutes ago)  |
|
|
|
Hi Phil - I have a few more spare DDR3 RAMs - I can use this for the Biostar Z170 mobo?
Also, I see you select 1 x stick 8GB DDR4, better to use 2 x 4GB DDR4 to enable dual channel?
Thanks
I do not think ddr3 works on the biostar mobo. As for ram 1 8gb uses less power then 2 4gb I have 1 board with 2 8gb and it does not hash faster then the board with 1 8gb But I have not really tested precisely if 2 4gb would be better then 1 8gb. My garage is hot It is 93 f so some of my power/watt numbers to mh get affected by that higher temp I would need to test one board and turn off all other gear so temps would be lower to be really accurate. |
|
|
|
Hi I'm completely new at this. I want to get some consulting on how to set up my own miner. Can you please help?
Sure I will help you out. 1) power cost is really important : under 6 cent you should make money 7 to 10 iffy over 10 cent you will lose money this is per kwatt 2) how much power do you have to spare? a stat of the art miner like the s-9 spends 1.3 to 1.4 kwatts an hour that is around 1008 kwatts a month at 10 cent $100.80 a month to run 3) how loud can you stand the s-9 is over 70db and can whine real nasty. 4) how to you plan to cool your gear 1400 watts is about 5000 btu. I have 6 units 5 s-9's and 1 s-7 they use around 7300 watts the fans use about 300 watts so 7600 watts to mine with 68th. this would cost you close to 10000 usd to set up this is more then most mine with and I hope to net get back 15000 for my 10000 over the next 8 months    Did you rent a s9 ,How much for electricity 1 month? how much you earn per month in USD with this setup... Well we split coins and I pay no power cost. But I purchased all the mining gear. So 5 miners cost me quite a bit. But they are doing 56 th and 28th is mine this month it should earn .94 btc or about 600 usd. Last month 700 usd month before that was more like 1000 and month before that was 700 as I had only some of the month. So as of now around 3000. Price of gear was about 8000. So I have 5000 to break even. If I sold them today I would get about 6500. Which would mean I am up about 1500 on a 8000 dollar investment if I liquidate today. Time span would be June 14 to October 1 for that calculation. |
|
|
|
So what is left? How many sticks left? Is USB board still available?
3 sticks the usb board the power supply for it custom hook up wires https://www.trcelectronics.com/ecomm/pdf/hsp150.pdfhttp://www.trcelectronics.com/View/Mean-Well/HSP-150-5.shtmlthe psu can run silent up to 150 watts at 90% efficiency or run with a fan of your choice up to 200 watts 90% efficiency I ran as many as 25 sticks on this psu pulled about 150 watts at higher clock of 250 psu is 47 new hub sells at 160 http://www.ebay.com/itm/Eyeboot-49-Port-USB-2-0-Hub-24P-ATX-PSU-110v-220v-/111507487113So 207 new for psu and hub would be a high number. 75 for 3 sticks is also a bit high adds to 282 usd Are you in UK shipping is 65 via medium flat rate that all adds to 347 lastly hook up wares are 13 grand total of 360 new which is far too much I don't want that much.. PM me an offer lower then 250 USD for 3 sticks psu usb hub custom hook up wires and free shipping to UK if I remember you are in the UK. if you only want the usb hub and the 3 sticks make an offer under 210 |
|
|
|
|
One more question.
Do you think two threaded rods could be used to support the long bars or are they solid and won't sag?
|
|
|
|
........
12mo; can we dream?
Incidentally, I bought 5 more GPUs while S9 was not on sale, a.k.a they have serious competition now.
gpu's are the biggest competition bitmaintech has at the moment. With all due respect, I must disagree with the view of GPU's being competition for Bitmain. Using a GPU to mine a different coin, which is then exchanged for BTC isn't really the same thing as buying a Bitcoin miner. Yes it may be a cheaper way to acquire BTC, mining another coin and exchanging does nothing in terms of the network, difficulty, and the like. To some extent folks that might have spent their money on a Bitmain product, maybe it has a tiny impact. If there was a wholesale rush to mine-XXX/exchange, folks with actual BTC mining hardware might benefit from a long term stability or reduction in difficulty. The value proposition also is at the whim of the exchange rate, and longevity of the the XXX coin. I always wonder what happens to all those XXX coins that are exchanged for BTC. Who gets "stuck" with them? Besides, Bitmain doesn't seem to have any difficulty selling their miners at the price they want, regardless of what folks do with their actual fiat money (e.g buying a GPU based system). Okay the Internet is a hard place to discuss with an s-9 . I can see your point in that bitmaintech doesn't care if miners buy gpus. I have 23 gpus mining at about 500mh earning 900 usd and costing 430 in power that is 18 cent power I net 470 usd per month. I have 55th in s-9 it earns me money but has free power due to solar array deal I have. I can only lose on s-9 if it breaks since my warranty is 90 days. So when I want to add gear I need to weigh the following 2 year warranty for gpu gear with the risk of all gpu coins crashing. Or a 90 day warranty on s-9 which the risk of the s-9 breaking. So I am middling my risk. If the solar array was on my land and in my house I would have a few gpu miners running in it. I can not see me going all gpu or all s-9 . So I see gpus and s-9 as different tools to dig crypto coin. I also see all coins as the same item no real difference between them when viewed as a means to acquire wealth. Obviously coins are consider different in other ways, but a million usd of any coin is a million usd. |
|
|
|
two side by side  a v2 which should be 650m freq  a v4 should be 550m freq  |
|
|
|
|
nice but i do not see a shot with 16 cards and 3 mobos.
|
|
|
|
Thank you philipma1957!
you are welcome. |
|
|
|
Thanks for doing it for so long, Phil. It's been fun and one of the things that kept me coming back to these forums despite me not mining for many many months.
It has been a lot of fun, but for now this is it. |
|
|
|
They are for sale, but have RAISED the prices:
ANTMINER S9-B15, 12.93TH/s,shipping out within 7 days after fully paid
Speed: 12.93
Weight: 5.5 kg
Price: 1540 USD
( 2.56 BTC )
ANTMINER S9-B14, 11.85TH/s,shipping out within 7 days after fully paid.
Speed: 11.85
Weight: 5.5 kg
Price: 1382 USD
( 2.297 BTC )
Er, B12 11.85 was $1442 and 12.93 was $1600, so at least it is slightly lower, NOT higher. It needs to be slightly higher with six month warranty. 12mo; can we dream? Incidentally, I bought 5 more GPUs while S9 was not on sale, a.k.a they have serious competition now. gpu's are the biggest competition bitmaintech has at the moment. |
|
|
|
If you can send for $40 total then ill take one off your hands. Add to the collection of memorabilia  I can do it send coin to 1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje pm me a mailing address. as of now looks like 8 of the 12 are spoken for. |
|
|
|
hey phil when you had the 460 did you test on out on xmr to see the hash rates of it?
No I was not mining XMR yet so no testing. |
|
|
|
|
Show Posts
