Sorry for the off topic comment, but I see this site has a few different size fans. They have an 8" 12" and 16". Any idea why the 12" has a higher CFM rating than the 16"? A fan like this could be useful to me in moving heat around to more needed areas this winter. |
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I bought the 2gb cards because back in February who knew it would remain profitable this long. And the 4gb were mostly overpriced.
Same here. Now my farm is mostly made up of 2GB cards, I have one rig still hashing ETH and the rest on ZCash. Hopefully it stays profitable for awhile yet... I planned to be upgrading my cards/adding more this spring when people sell off gear after winter is over and when the new AMD cards come out.. Should be plenty of options on hardware, as long as there is a coin to mine at the time. |
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Not good news at all. I try to keep up with the hardware issues on these things even though so far Ive been lucky and only had to deal with dead dies on my titan. No controller issues at all *knocks on wood*.
lightfoot, I took your advice (i think it was yours anyway) awhile back and only ran mine at 275mhz per die and have upgraded the cooling per searings advice just to get this thing to last as long as possible.
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With Claymore V7 some of my GPUs have slowed with the modified bios's, some are faster, some are faster being stock.
Best is the reference R9 290 running at 230 h/s.
Anyone else can report.
Damn! Those things are tanks.... too bad I dont own any. What are you getting with your 7950's now? and what CPU? I run a Sempron with 5-6 per rig which I know hurts me some. 7950 are ~155. Im pushing about 112 average on optiminer and ethos. Not all my cards would run on the tweaked memory timings, maybe the newest update will get me closer to that number. |
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With Claymore V7 some of my GPUs have slowed with the modified bios's, some are faster, some are faster being stock.
Best is the reference R9 290 running at 230 h/s.
Anyone else can report.
Damn! Those things are tanks.... too bad I dont own any. What are you getting with your 7950's now? and what CPU? I run a Sempron with 5-6 per rig which I know hurts me some. |
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I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference. Nice find though, good information!!  You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400. Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet. I think I even went as far as to drop the clocks to 1000/1250 and it still crashed. Maybe try the MSI 280X instead. I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950. Youre right. I dont know why I thought that. *idiot* I'll try the MSI 280X as well as the reference 8950 and see how they perform. I'll report back later on. thanks! The MSI 280X bios seems to be working fine at 1000/1575 clocks pulling 82 h/s on silentarmy v5. Im sure Ill get more once its updated. I did notice that the voltage is 1.2v which is lower than stock (1.25v) but higher than I had it before. Back in the Scrypt mining days I had flashed a bios to thee cards which lowered the voltage to 0.9 or so, this dropped my over all wattage by about 50watts per card and didnt affect the hashrate at all. I have not tried the 8950 bios yet, that I'll do this evening. And the 8950 bios works as well, thanks!  |
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I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference. Nice find though, good information!! You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400. Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet. I think I even went as far as to drop the clocks to 1000/1250 and it still crashed. Maybe try the MSI 280X instead. I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950. Youre right. I dont know why I thought that. *idiot* I'll try the MSI 280X as well as the reference 8950 and see how they perform. I'll report back later on. thanks! The MSI 280X bios seems to be working fine at 1000/1575 clocks pulling 82 h/s on silentarmy v5. Im sure Ill get more once its updated. I did notice that the voltage is 1.2v which is lower than stock (1.25v) but higher than I had it before. Back in the Scrypt mining days I had flashed a bios to thee cards which lowered the voltage to 0.9 or so, this dropped my over all wattage by about 50watts per card and didnt affect the hashrate at all. I have not tried the 8950 bios yet, that I'll do this evening. |
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There is a line between being just a bad businessman and a criminal. There is MORE THAN ENOUGH evidence to prove that Chris' activity is criminal. If he can not show authorities a mining operation he will be arrested, it's that simple. What are we doing to make this happen? I have several friends in Romania and I'm ready to ask for their help navigating the system. Who's with me? It's long past time. I saw where a few larger account holders actually went over there and found him. They published his identity with pics of his residence and records of his identity. He should pay and pay now or go to jail.
Please contact me with any usable info because I have the ways and means to go after this son of a bitch and I AM doing just that.
If you or anyone else has the ability to go after him, dont wait, go for it! There are lots of people who were scammed here but very few with the ability or knowledge top do anything about it. I fall into that category myself. I would like to see an end to this but I highly doubt we will ever see it. I wish you luck in your endeavors. |
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As far as the OP, I didnt build rigs for zcash. I did, however, build a little farm for Ether (a bit later into the hype than I should have but so be it). I mined Ether for awhile and then switched to zcash on day 1 and have been mostly there ever since. I do keep up with price and such and will switch back once the profitability dies. SOme pictures and specs here: http://forum.feathercoin.com/topic/8678/new-farm-setup/If you build a rig for Ethereum, then it will be useless for Ethereum within a year as it will be PoS by that time. the hashrate and money will likely move to somethign else, like etheruem classic or zclassic or whatever any new thign will come out the profit in those coins can not simply disappear it will re-arrange itself to a new beginning i still remember when many were saying some months ago that after ethereum the mining scene would have been dead, look now you have other good options... Bingo. Two of the rigs I have were built originally to mine LTC back in 2013 or so? They ROI'd and then were switched to Feathercoin and then to a multipool for awhile. At some point GPU mining dried up and I turned them off for about a year. I eventually powered them back up mining feathercoin again and then Ether and now Zcash. Its not as simple as mining BTC on an ASIC, set it and forget it, but if you dedicate time and effort into it then GPU mining can be profitable from time to time. Not everyone has the time to invest though. |
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I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference. Nice find though, good information!! You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400. Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet. I think I even went as far as to drop the clocks to 1000/1250 and it still crashed. Maybe try the MSI 280X instead. I posted a reference 7950 BIOS a few pages back, search for it and try it. Its for a 8950 technically but I think it worked for some other individual's 7950. Youre right. I dont know why I thought that. *idiot* I'll try the MSI 280X as well as the reference 8950 and see how they perform. I'll report back later on. thanks! |
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I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference. Nice find though, good information!! You sure you had the Hynix memory? The most I can get with my Gigabyte 7950 is 130 Sols because it crashes with any memory clock higher than 1500. I think I run it at 1000/1400. Pretty sure. I run ethos (linux) so GPUz doesnt do me any good. Ethos reports it as Hynix. Its not the exact model you list, its a Gigabyte Twin Frozr II but I thought Id give it a try anyway. I also planned to try the same bios on my reference Sapphire 7950's but have not made it that far yet. I think I even went as far as to drop the clocks to 1000/1250 and it still crashed. |
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I tried the 7950 bios on 3 of my Gigabyte cards, one saw a nice improvement, up to 90+ h/s but it fails after a few minutes. The other two only hash for about a minute before crashing. Even adjusting the clocks up/down made no real difference. Nice find though, good information!! |
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As far as the OP, I didnt build rigs for zcash. I did, however, build a little farm for Ether (a bit later into the hype than I should have but so be it). I mined Ether for awhile and then switched to zcash on day 1 and have been mostly there ever since. I do keep up with price and such and will switch back once the profitability dies. SOme pictures and specs here: http://forum.feathercoin.com/topic/8678/new-farm-setup/ |
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So if the efficiency is no better than a Titan -- then -- is this a SCAM?
Why would someone overpay to buy these units? I'm lost here.
It seems that it is basically 2.5x as efficient as the 100Mh/s A2 units (which are selling for about $650 with PSU).
Sadly, no its not a scam. Miners will be flocking to these, just like every stupid hardware release ... no matter the price and no matter the efficiency. Its an addiction. Ill probably be the only one not purchasing any. Nope, not the only one... Unless the price drops. A lot. |
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Nice, Im at nearly the same hashrate but higher total wattage. Im running old 7950s and 380s though. Id like to transition over to 480s as my hardware dies. The 7950s were bought to mine Litecoin and ROI'd then, so Im out nothing by continuing to run them.
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Great news! Keep us posted!
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Is a rack of Gridseed Orbs better at mining this than GPUs? The GPU rack might cost as much as a higher priced LTC ASIC.
Are Gridseeds better than GPU? Yes, however you will still pay more for electric than you can mine with those unless you have very very cheap (free) power. Gridseeds were the first Scrypt ASIC but since then more efficient machines have come out and replaced them. Yes, but they are all over $500, aren't they? Newer ASICS? Yes they are more expensive. It depends on what your endgame is. If you are trying to make money by mining you'll need to buy the more expensive miners (or get free electric). If you just want to play and learn (at a profit LOSS) then gridseed are ok (as are GPUs or even CPUs). Examples: an average CPU is probably 40kh/s and uses 100 watts a 7950 GPU gets about 600KH/s and uses 220 watts a gridseed gets 330kh/s and uses 8 watts a KNC titan gets 300MH/s and uses 1300 watts using the current price of LTC and an electric cost of $0.10 these are what you could expect with each of the above: CPU: Expected Rewards Costs Net Profit 24 hours 0.00039023 LTC 0.00 USD 0.24 USD -0.24 USD 7 days 0.00273164 LTC 0.01 USD 1.68 USD -1.67 USD 30 days 0.01170703 LTC 0.05 USD 7.20 USD -7.15 USD GPU: Expected Rewards Costs Net Profit 24 hours 0.00585352 LTC 0.02 USD 0.53 USD -0.51 USD 7 days 0.04097461 LTC 0.16 USD 3.70 USD -3.54 USD 30 days 0.17560547 LTC 0.68 USD 15.84 USD -15.16 USD Gridseed: Expected Rewards Costs Net Profit 24 hours 0.00321943 LTC 0.01 USD 0.02 USD -0.01 USD 7 days 0.02253604 LTC 0.09 USD 0.13 USD -0.05 USD 30 days 0.09658301 LTC 0.37 USD 0.58 USD -0.20 USD KNC Titan Expected Rewards Costs Net Profit 24 hours 2.92675781 LTC 11.36 USD 3.12 USD 8.24 USD 7 days 20.48730469 LTC 79.49 USD 21.84 USD 57.65 USD 30 days 87.80273438 LTC 340.67 USD 93.60 USD 247.07 USD Great chart, and it's nice to have more figures. I could be wrong, but from personal experience mining at one of the best litecoin pools, litecoinpool.org, I'm getting less than your figure using my Gridseed Orb. It's mining consistently at 300 kh/s with only a rare hw error. It wasn't compatible with the Pascalcoin miner so it was down a lot. It still goes down on occasion. So, with the downtime, I can't give you an exact figure. With your figures, it isn't good except with the Titan. 330 MH/S isn't so much in ASIC terms, a used S3 does that. I couldnt remember what an orb hashed at so i googled it. 330kh/s is the first thing I saw and sounded right. Its also hard to compare Bitcoin mining to Scrypt, Scrypt is "about 1000 times harder" which is why the fastest Scrypt miners are only measured in MH/s while Bitcoin is GH/s (or TH/s now). Litecoinpool.org is what I use as well. Ive used it almost exclusively since I started Litecoin mining and have had very very few issues with it. |
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Is a rack of Gridseed Orbs better at mining this than GPUs? The GPU rack might cost as much as a higher priced LTC ASIC.
Are Gridseeds better than GPU? Yes, however you will still pay more for electric than you can mine with those unless you have very very cheap (free) power. Gridseeds were the first Scrypt ASIC but since then more efficient machines have come out and replaced them. Yes, but they are all over $500, aren't they? Newer ASICS? Yes they are more expensive. It depends on what your endgame is. If you are trying to make money by mining you'll need to buy the more expensive miners (or get free electric). If you just want to play and learn (at a profit LOSS) then gridseed are ok (as are GPUs or even CPUs). Examples: an average CPU is probably 40kh/s and uses 100 watts a 7950 GPU gets about 600KH/s and uses 220 watts a gridseed gets 330kh/s and uses 8 watts a KNC titan gets 300MH/s and uses 1300 watts using the current price of LTC and an electric cost of $0.10 these are what you could expect with each of the above: CPU: Expected Rewards Costs Net Profit 24 hours 0.00039023 LTC 0.00 USD 0.24 USD -0.24 USD 7 days 0.00273164 LTC 0.01 USD 1.68 USD -1.67 USD 30 days 0.01170703 LTC 0.05 USD 7.20 USD -7.15 USD GPU: Expected Rewards Costs Net Profit 24 hours 0.00585352 LTC 0.02 USD 0.53 USD -0.51 USD 7 days 0.04097461 LTC 0.16 USD 3.70 USD -3.54 USD 30 days 0.17560547 LTC 0.68 USD 15.84 USD -15.16 USD Gridseed: Expected Rewards Costs Net Profit 24 hours 0.00321943 LTC 0.01 USD 0.02 USD -0.01 USD 7 days 0.02253604 LTC 0.09 USD 0.13 USD -0.05 USD 30 days 0.09658301 LTC 0.37 USD 0.58 USD -0.20 USD KNC Titan Expected Rewards Costs Net Profit 24 hours 2.92675781 LTC 11.36 USD 3.12 USD 8.24 USD 7 days 20.48730469 LTC 79.49 USD 21.84 USD 57.65 USD 30 days 87.80273438 LTC 340.67 USD 93.60 USD 247.07 USD |
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Is a rack of Gridseed Orbs better at mining this than GPUs? The GPU rack might cost as much as a higher priced LTC ASIC.
Are Gridseeds better than GPU? Yes, however you will still pay more for electric than you can mine with those unless you have very very cheap (free) power. Gridseeds were the first Scrypt ASIC but since then more efficient machines have come out and replaced them. |
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