Epoch
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October 25, 2013, 03:37:08 PM |
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I'm hoping the the 2TH Cointerra does not require more than 1440W. Right now that's still up the air.
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aerobatic
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October 25, 2013, 03:52:18 PM |
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I'm hoping the the 2TH Cointerra does not require more than 1440W. Right now that's still up the air.
why do you care whether its 1440 watts or more? there are two power cables, so you plug each one into a different circuit if youre using 120 volts), or could be the same circuit if youre on 240 volts. lets say 2000 TH needs 1200-1300 watts (0.6 ish W/GH). and the fans (there's 6 of them in the photo, 3 at the front, 3 at the back)... and the pumps (there's 4 of them, one for each chip) are probably 100 watts... and the controller board... (im guessing, 20?)... so you're probably on the max end of your 1440 watts, without allowing for power supply inefficiencies.. and dc/dc power contverter efficiencies, so i think its going to be, realistically, above 1440 watts, even for nominal use. And then wouldnt you want to overclock/overvolt them to make them run faster, at least initially, when its makes more sense to get more GH's out of it? like everyone else in the 28nm world, im sure they will also offer a way to undervolt to save power, at the expense of GH's -- Jez
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Epoch
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October 25, 2013, 04:01:37 PM |
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I'm hoping the the 2TH Cointerra does not require more than 1440W. Right now that's still up the air.
why do you care whether its 1440 watts or more? there are two power cables, so you plug each one into a different circuit if youre using 120 volts), or could be the same circuit if youre on 240 volts. lets say 2000 TH needs 1200-1300 watts (0.6 ish W/GH). and the fans (there's 6 of them in the photo, 3 at the front, 3 at the back)... and the pumps (there's 4 of them, one for each chip) are probably 100 watts... and the controller board... (im guessing, 20?)... so you're probably on the max end of your 1440 watts, without allowing for power supply inefficiencies.. and dc/dc power contverter efficiencies, so i think its going to be, realistically, above 1440 watts, even for nominal use. And then wouldnt you want to overclock/overvolt them to make them run faster, at least initially, when its makes more sense to get more GH's out of it? like everyone else in the 28nm world, im sure they will also offer a way to undervolt to save power, at the expense of GH's I care because I don't have 2 120V/15A circuits in close proximity to one another. I don't have 240V. I have no intention to do any 'rewiring' in my house. My datacenter charges me for each 120V/15A circuit I use. In other words, the device would be much less hassle to deploy (for many people, I imagine), if it could be run from a single and very common 120V/15A circuit. Your calculations are incomplete until you know the power requirements of the ASICs. This is the big unknown. BFL was off by a factor of 5 (what they *thought* would be 60W turned out to be almost 300W). I don't expect Cointerra to make a mistake of this magnitude, but until they have actual silicon the reality is that we do not, and cannot, know what the power will be.
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aerobatic
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October 25, 2013, 04:08:58 PM |
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Your calculations are incomplete until you know the power requirements of the ASICs. This is the big unknown. BFL was off by a factor of 5 (what they *thought* would be 60W turned out to be almost 300W). I don't expect Cointerra to make a mistake of this magnitude, but until they have actual silicon the reality is that we do not, and cannot, know what the power will be.
agreed, we dont know the exact power til theyve taped out, though since everyone else is also in the same range, i think for the next few days we can assume its 0.6 ISH, since thats where most of the 28nm chips seem to be drawing... (hashfast, bfl, etc) and then when they announce the tapeout final figures, we will know exactly. thats why i suggested 1200-1300 watts, allowing for 0.65 w/gh (same as hf). no one else in the bitcoin asic world has got it so wrong as bfl did last time, so that was a monumental error on their part and you cant tar everyone else with the same brush. there's no way that anyone else is going to make a mistake and get the power wrong by 5X! but it does seem that 2 TH is about the max that you can power off of one household circuit in the 28nm generation (from any asic supplier), and even that is borderline and better to do it off two circuits. i think its clear that the long-term future of bitcoin mining is in datacenters... even for individual ownership, or as part of hashing contracts... it makes more sense for these power hungry boxes to be hosted somewhere professional with good cooling and reliable power. -- Jez
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ralree
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November 04, 2013, 02:16:37 AM |
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I wish there was some news. It's hard to feel good about silence.
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1MANaTeEZoH4YkgMYz61E5y4s9BYhAuUjG
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DeathAndTaxes
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Gerald Davis
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November 04, 2013, 04:44:45 AM |
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agreed, we dont know the exact power til theyve taped out, though since everyone else is also in the same range, i think for the next few days we can assume its 0.6 ISH, since thats where most of the 28nm chips seem to be drawing... (hashfast, bfl, etc) and then when they announce the tapeout final figures, we will know exactly. thats why i suggested 1200-1300 watts, allowing for 0.65 w/gh (same as hf). Chip wattage =/= wattage at the wall. Figure 90% lost in DC conversion, and another 90% lost ATX PSU and add in overhead for cooling and host. If the chip is 0.55 J/GH no way you are looking at the wall wattage of only 1300W. but it does seem that 2 TH is about the max that you can power off of one household circuit in the 28nm generation (from any asic supplier), and even that is borderline and better to do it off two circuits. Agreed. I doubt we will see higher than 2 TH/s and 1.0 or 1.5 TH/s may make more sense in the long run. Continual loads need to be derated 20% (NEC) so that limits a 120V, 15A circuit to 1440W continual. You can always use more units if you want more power.
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ralree
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November 04, 2013, 05:12:30 AM |
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agreed, we dont know the exact power til theyve taped out, though since everyone else is also in the same range, i think for the next few days we can assume its 0.6 ISH, since thats where most of the 28nm chips seem to be drawing... (hashfast, bfl, etc) and then when they announce the tapeout final figures, we will know exactly. thats why i suggested 1200-1300 watts, allowing for 0.65 w/gh (same as hf). Chip wattage =/= wattage at the wall. Figure 90% lost in DC conversion, and another 90% lost ATX PSU and add in overhead for cooling and host. If the chip is 0.55 J/GH no way you are looking at the wall wattage of only 1300W. but it does seem that 2 TH is about the max that you can power off of one household circuit in the 28nm generation (from any asic supplier), and even that is borderline and better to do it off two circuits. Agreed. I doubt we will see higher than 2 TH/s and 1.0 or 1.5 TH/s may make more sense in the long run. Continual loads need to be derated 20% (NEC) so that limits a 120V, 15A circuit to 1440W continual. You can always use more units if you want more power. Investing in a good 220V PDU and a 220V 30A circuit is a good idea if you're planning to run lots of equipment. I'm really glad I did this.
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1MANaTeEZoH4YkgMYz61E5y4s9BYhAuUjG
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Gyrsur
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November 04, 2013, 08:24:24 AM |
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did Cointerra tape-out in the meantime?
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DeathAndTaxes
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November 04, 2013, 08:25:52 AM |
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did Cointerra tape-out in the meantime?
They haven't said a single word. Last statement was "tape scheduled for early Oct" and then silence.
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edgar
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November 04, 2013, 08:48:43 AM |
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i want to believe its worth it - but even 6 grand seems a waste now.
Id be fuming if id spent 15.
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Wesly
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November 04, 2013, 08:53:06 AM |
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Just came across CoinTerra's Google's Adwords ads. "Easy Money" I agree it is easy money for CoinTerra, not so much for their customers unless they meant easy come, easy go ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fpagead2.googlesyndication.com%2Fsimgad%2F8402370389421267003&t=665&c=p8mCylJPxRDk3w)
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RoadStress
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November 04, 2013, 10:04:04 AM |
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Just came across CoinTerra's Google's Adwords ads. "Easy Money" I agree it is easy money for CoinTerra, not so much for their customers unless they meant easy come, easy go ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fpagead2.googlesyndication.com%2Fsimgad%2F8402370389421267003&t=665&c=p8mCylJPxRDk3w) So is this moving slowly to a fail?
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Easy2Mine
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November 04, 2013, 11:19:06 AM |
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Just came across CoinTerra's Google's Adwords ads. "Easy Money" I agree it is easy money for CoinTerra, not so much for their customers unless they meant easy come, easy go ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fpagead2.googlesyndication.com%2Fsimgad%2F8402370389421267003&t=665&c=p8mCylJPxRDk3w) So is this moving slowly to a fail? I hope so. I don't like their faces
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bitblazing
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November 04, 2013, 11:54:55 AM |
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Ok so Cointerra it is now November. Customers should be provided a update on the tapeout. Communication is very important and right now you guys are not doing a good job.
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hagbase
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November 04, 2013, 11:59:52 AM |
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Ok so Cointerra it is now November. Customers should be provided a update on the tapeout. Communication is very important and right now you guys are not doing a good job.
+1
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Gyrsur
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November 04, 2013, 12:00:25 PM |
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did Cointerra tape-out in the meantime?
They haven't said a single word. Last statement was "tape scheduled for early Oct" and then silence. thank you very much!
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BBQKorv
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November 04, 2013, 02:29:50 PM |
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When can I order these for immediate shipping? No more pre-orders without CC or PayPal for me.
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ImI
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November 04, 2013, 02:34:10 PM |
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When can I order these for immediate shipping? No more pre-orders without CC or PayPal for me.
next summer?
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GandalfG
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Dig your freedom
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November 04, 2013, 02:45:35 PM |
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When can I order these for immediate shipping? No more pre-orders without CC or PayPal for me.
Only Avalon rig, chip and Bitfury chip are on stock for immediate shipping. Other companies still are parasitic on pre-orders.
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Want to say thanks? 16ragydppe9QFRVhrdwEUjgfMS7KCfEFGY
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dhenson
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November 04, 2013, 04:32:32 PM |
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When can I order these for immediate shipping? No more pre-orders without CC or PayPal for me.
Only Avalon rig, chip and Bitfury chip are on stock for immediate shipping. Other companies still are parasitic on pre-orders. Bit burner Fury 50gh in Stock for sale here https://bitcointalk.org/index.php?topic=322129.0
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