For 12hours at hashcows i got 0.0045btc for 3500kh/s
Multipools are dead?!
You need wait more than 72 hours. It takes time for the coins to mature and to be exchanged. |
|
|
|
well thought id add my progress in trying to solve this, i have now cleaned up the cores and repasted using arctic silver 4, and have replaced all the thermal pads,
its amazing the difference new paste and pads on a clean surface helps its now the coolest card in my water loop even after another card the same has used the water first, my temps have dropped by 10c easy under load.
unfortunatly it hasnt fixed my issue, BUT for stability i was playing around with just using one side of the card or the other to see witch it was, now i can run the one half full speed ahead and its stable but the other side will run for about 5 mins on i20 and upto 3 hours on i12.
one thing i might try is running the one core thats bad on its own in my water loop so it doesnt get hot and see if it is caused by heat, my way of thinking here is if ive damaged the VRM chip on my board it might work fine untill it hits this temp, in witch case i should be able to see about getting that chip replaced.
thoughts anyone does that sound right to you guys?
If you reduce the core frequency, it might help. |
|
|
|
|
If FBI sells the coins in every exchange, you are going to boycott every exchange?
|
|
|
|
I will join with a small rig (2x 280x) if that is good i will point my bigger rig (9x 280x) from middlecoin to this one too  Do you have (9x 280x) in one computer? How do you achieve that? |
|
|
|
That seems more like a reasonable price. How long before they are available? And by available I mean when will they be actually HASHING? I know they won't be shipped for awhile because of hosting, but when will they be actually hashing? I'm trying to plan out my investments. Any idea on timeframe? Like end of January? Mid February? Early march?
I have the same questions. plus: Are the chips being made in a IC factory or it is still in design? When will the PCB be ready? If they are not ready yet, I would have though it is not Q1 delivery, probably Q3 delivery, |
|
|
|
|
In my worker setting, there are "Round Shares Accepted (Adj)". Are these adjusted shares? How are they adjusted?
In the stats section, there are also pool accepted shares, are they adjusted?
Should be ratio of my accepted shares and the poll accepted share similar to the ratio of my hash rate to pool hash rate?
|
|
|
|
I've been watching this. And because you don't want your 'stuff' to get copied you are asking us to pay you nearly $1.00 a Khash for you to 'host' your scrypt miners?
A major portion of securing the risk of Scrypt mining is having hardware in hand that is able to be re-sold at varying degrees of depreciation. Even if your price was cut by 2/3rds I would still consider increasing my GPU's a more calculated and secured risk. I have total control over my investment and truthfully I can increase my hashing power at a lower price. The cost of electricity is obviously a factor but I suspect most serious miners have found solutions to get power more affordably. (coop buying, commercial rates etc)
And then we have next-gen GPU's which maybe be even more hash per dollar than our best previous ones. All of which will depreciate slowly and have manageable risk profiles.
I'm not against scrypt asics, I would LOVE to get my hands on some. And it looks like you are kicking butt here. I'm ready to double down on crypto-currencies. But short of physically coming to see your stuff I need it in my hands immediately.
I agree with this. By my calculation, the price of the ASIC miner has to be $0.6/kH/s to match that of AMD 7990 if we take into account the electricity cost and resell value of the gears. |
|
|
|
is it profitable?
It depends on the price of electricity. |
|
|
|
The upcoming months will be tremendous with WDC.
I have been buying like crazy as the relative value is declining. 0.1 BTC is the long term equilibrium-price. As long as the price is under that relation, there is an opportunity to have leveraged returns on investment.
This spring I am expecting the next leap of magnitude.
My goals in terms of BTC (who cares USD):
May 1: 0.005 BTC
August 1: 0.05 BTC
December 1: 0.08 BTC
Jan 1 (2015): 0.101 BTC
Yup, the price will overshoot temporarily. It is pure economics. Everybody who has studied in university the economics of money theory knows the forex shoots always over in uptrends and shoots under in downtrend. This is called J-curve.
There will be excitement as the 0.1 BTC is hit and therefore the sellers are not interested in selling (they hope it will go even higher) and the buyers are throwing their money to WDC which creates scarcity to the markets. This is exactly the riight exit point for bulls so that they can go back in in 0.095 levels and gain ~ 5 % which is a good gain (the real annual growth of world's economy in long time series is aroun 2.2 %).
There will be 21M BTC and 265M WDC eventually. If they were the same capitalization, WDC should be 0.08 BTC. Do you think the usage of WDC surpass that of BTC in the next year (2015)? If WDC is 0.01 BTC in 2018, I will be extreme happy. |
|
|
|
|
The powered riser should connect to the main 1250W PSU if you do not want cut the 12V lines on the riser.
In this case, 850W for the 2nd PSU is enough if you undervolt. Some 280X cannot be undervolted.
Make sure the 850W PSU is single rail.
|
|
|
|
|
No further about the gridseed chip. I believe it is bought up by a large customer.
|
|
|
|
Here are images of my rigs, both with 4X7990 When I use 750W+1250W, I use the 750W to drive the MB, 1X7990 and powered risers. The 1250W is used for 3X7990. I only use jump to short the green(?) to ground. In this setup, you need to use the Afterburner to reduce the voltage. The hash rate is about 5.1-5.2MH/s, depending on the exact clock speed. I usually use <1V for Vcore. Some good cards can run 950MHz, but some can only run 916MHz. For the 950MHz card, the hash is 660kH/s. The memory speed is 1000MHz. I use some extra fan for cooling if the cards are in a PC case. The MB is Gigabyte GA-Z68AP-D3  The MB is Asus P8P67 work station.  |
|
|
|
Dear aTriz and Nearmiss,
Please cut the vardiff rating, these 80+ WUs are so large they turn stale or are "jobs not found" before I can submit, resulting in 40% rejects again...sure it saves on a little server cost, but it's ruining returns for both you and us.
A=5790 R=2630
This is why I don't mine middlecoin, they force me to 512 and it's so costly when one of them fails. Please take this into consideration.
If the vardiff rating is not to blame, please figure this out. I have 90% less rejects when I straight mine a coin, even one you guys are mining at the same time.
Thank you,
Anubite
What is the combination of your cards and the hash rate? What is the difficulty value? For my 8 GPU 7990+7970 rig (5.6MH/s), the difficulty is 510 at the moment. Some times, it is 1000. The total rejection rate is 8.9%. It is usually 1%. So maybe it is coin specific. Yes it is coin specific, but on some coins I also get nearly 40% reject, due to HIGH VARDIFF please lower it. I have 10x 7950 and depends on the coin the reject ratio goes from 1% to 40% due to high vardiff. and in middlecoin the situation is even worse!, that's the main reason I use middlecoin only as a backup, because the very high difficutly results in a lot of work that goes nowhere, nearly 50% of the time is useless work. That is because you use 7950. In order for 7950 to perform faster, you have to use 1 GPU thread and high intensity. The higher intensity, the more work is going on in the GPU. So it takes longer to finish one task, causing rejection/stale. For example, intensity 19 has double the amount of work going on as intensity 18. After I found this out, I stopped purchasing 7950. All my new GPUs are 7970 or 7990. They use intensity 13 and 2 GPU threads, which is equivalent to intensity 14, which is 1/32 (2^5) of intensity 19. They are more suitable for fast coins. |
|
|
|
What is the combination of your cards and the hash rate?
What is the difficulty value?
For my 8 GPU 7990+7970 rig (5.6MH/s), the difficulty is 510 at the moment. Some times, it is 1000.
The total rejection rate is 8.9%. It is usually 1%. So maybe it is coin specific.
I have 1 r9 290x from Sapphire, puts out about 904kh/s with stock cooler and a little tweaking. I use cgminer. What are expiry, scantime, and hotplug? (btw if you could help me figure out why bfgminer crashes my computer, there's 25 pxc in it for you  ) "intensity" : "20", "vectors" : "1", "worksize" : "256", "kernel" : "scrypt", "lookup-gap" : "0", "thread-concurrency" : "32765", "shaders" : "0", "gpu-engine" : "0-0", "gpu-fan" : "0-100", "gpu-memclock" : "0", "gpu-memdiff" : "0", "gpu-powertune" : "0", "gpu-vddc" : "0.000", "temp-cutoff" : "90", "temp-overheat" : "86", "temp-target" : "83", "api-mcast-port" : "4028", "api-port" : "4028", "expiry" : "120", "gpu-dyninterval" : "7", "gpu-platform" : "0", "gpu-threads" : "1", "hotplug" : "5", "log" : "3", "no-pool-disable" : true, "protocol-dump" : true, "queue" : "1", "scan-time" : "30", "scrypt" : true, "temp-hysteresis" : "3", "shares" : "0", "kernel-path" : "/usr/local/bin" Your 904 kH/s is very high already. You can get more configuration setting from the following website. http://www.overclock.net/t/1437876/290-and-290x-litecoin-mining-performance |
|
|
|
Dear aTriz and Nearmiss,
Please cut the vardiff rating, these 80+ WUs are so large they turn stale or are "jobs not found" before I can submit, resulting in 40% rejects again...sure it saves on a little server cost, but it's ruining returns for both you and us.
A=5790 R=2630
This is why I don't mine middlecoin, they force me to 512 and it's so costly when one of them fails. Please take this into consideration.
If the vardiff rating is not to blame, please figure this out. I have 90% less rejects when I straight mine a coin, even one you guys are mining at the same time.
Thank you,
Anubite
What is the combination of your cards and the hash rate? What is the difficulty value? For my 8 GPU 7990+7970 rig (5.6MH/s), the difficulty is 510 at the moment. Some times, it is 1000. The total rejection rate is 8.9%. It is usually 1%. So maybe it is coin specific. |
|
|
|
I have 17X7990 in total. The core/memory voltage and frequency vary because every GPU is different. For some GPU, I can run 0.99v, with 950/1000 MHz, temperature is 70C. For others, the temperature is 85C, with 0.95V, 870/900 MHz. It depends on the position of the cards in a PC case.
I use powered PCIE risers in open case, I put extra fans to extract heat out.
The original thermal past is extremely thick. I tried to apply thin layer of thermal paste, the improvement is minimal, just 2-5 degree, as the heat sink cannot touch the GPU evenly, even after I adjusted the force with the 4 screws. That could be the reason why manufacturer apply a thick layer of thermal paste.
whats the maximum number of 7990 gpu's we can run per motherboard, can you please send me your configuration, specs of the rigs etc, I have 10x7990 cards that I am looking to put maximum per motherboard. if you can some pics would be great too. Thanks I run 4X7990 or 2X7970+3X7990. These are all 8 GPU in total. I have not tried more than 8 GPU. The MBs are ASUS Rampage Extreme (too powerful for mining), MSI Z77A GD55, Gigabyte GA-Z68AP-D3, ASUS P7P55D pro (LGA1156). These MB have 5 PCIE slots or more. I use Windows 8, Catalyst 13.4 or higher as lower version does not recognise 7990. Some MB needs 13.8 or higher. I do not know why. Hi Thanks for the reply, much appreciated. will you pass a few more information, Asus rampage(lga2011) is too expensive too It looks like all the ones are tested are lga1155 or above. So I suppose the lga1150 will not support these many gpu's. I only have 7990 so which of the above motherboards you tested with that combination? which processor, how much ram needed, PSU requirements etc. Did you use intel processor or AMD? which one? I dont know if this is asking too much, but it would also be great if i can get a copy of the config file. Cheers I would recommend Gigabyte GA-Z68AP-D3. It costs about $60. I used it to run 4X7990. The CPU is Intel Celeron G1610 (LGA1155) with 4GB memory. The memory speed does not make difference, so you can use cheap memory. The power requirement for 4X7990 is about 1680W (4X400W+80W). I use one 750W+1250W. If you undervolt and underclock, 400W is more than enough for one 7990. The setting, Core/memory = 950/1000MHz, Vcore = 0.99V. The setting varies for each card. You need Afterburner Beta to tune the 7990. Normal Afterburner does not work. The default 1.2V Vcore is too high, it needs more than 550W for each card. For the GA-Z68AP-D3, I used two PCIE16 slots and PCIE1_1 and PCIE1_3. PCIE1_1 does not need jumper. PCIE1_3 needs A1B17 jumper. I use PCIE riser for the PCIE16_2, no jumper needed. The second choice is MSI Z77A GD55, because it has on board power and reset button. But it is more expensive, maybe about $120. Same G1610. Each 7970 requires 250W if you undervolt. |
|
|
|
I have 17X7990 in total. The core/memory voltage and frequency vary because every GPU is different. For some GPU, I can run 0.99v, with 950/1000 MHz, temperature is 70C. For others, the temperature is 85C, with 0.95V, 870/900 MHz. It depends on the position of the cards in a PC case.
I use powered PCIE risers in open case, I put extra fans to extract heat out.
The original thermal past is extremely thick. I tried to apply thin layer of thermal paste, the improvement is minimal, just 2-5 degree, as the heat sink cannot touch the GPU evenly, even after I adjusted the force with the 4 screws. That could be the reason why manufacturer apply a thick layer of thermal paste.
whats the maximum number of 7990 gpu's we can run per motherboard, can you please send me your configuration, specs of the rigs etc, I have 10x7990 cards that I am looking to put maximum per motherboard. if you can some pics would be great too. Thanks I run 4X7990 or 2X7970+3X7990. These are all 8 GPU in total. I have not tried more than 8 GPU. The MBs are ASUS Rampage Extreme (too powerful for mining), MSI Z77A GD55, Gigabyte GA-Z68AP-D3, ASUS P7P55D pro. These MB have 5 PCIE slots or more. I use Windows 8, Catalyst 13.4 or higher as lower version does not recognise 7990. Some MB needs 13.8 or higher. I do not know why. |
|
|
|
According to dustcoin.com digitalcoin is 333% more profitable then all other crypto's.
Why doesn't DGC show up on multipool as one of the more profitable coins?
If you go to http://www.coinchoose.com/DGC (2100%) is less profitable than LTC (2220%). |
|
|
|
|
nearmiss, is that autopayout still working? Or do we have to wait until Sun/Monday?
I have yahoo email account, so I do not receive verification email when I use the manual cash out tool.
|
|
|
|
I, like billionaire, have not been able to withdraw funds from the account. I get "invalid password" on co.hashco.ws. I am sure I am using the correct credentials. I have contacted support@hashco.ws and aTriz on IRC but still have not received and support. Help pls! I have yahoo.com email address. I tried twice the cash out tool, I did not receive the verification email. If the auto payout is still working, I do not mind. |
|
|
|
|
Show Posts
