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mamiakimo (OP)
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July 05, 2016, 03:35:23 PM |
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hi,
bitmain APW3-12-1600-B2 have this note (The PSU cannot be used in countries with a mains power voltage lower than 205V. The PSU will not start below this voltage. And power cord is not included, please find one with at least 16A from your local market.)
i have free electricity but its very bad which moving all the time between 185V to 220V ( using voltage stabilizer! )
without stabilizer it moving between 145V to 180V
now, what is the best solution for this situation
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philipma1957
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July 05, 2016, 03:41:13 PM |
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hi,
bitmain APW3-12-1600-B2 have this note (The PSU cannot be used in countries with a mains power voltage lower than 205V. The PSU will not start below this voltage. And power cord is not included, please find one with at least 16A from your local market.)
i have free electricity but its very bad which moving all the time between 185V to 220V ( using voltage stabilizer! )
without stabilizer it moving between 145V to 180V
now, what is the best solution for this situation
A) tell us what country So I can figure what psu will ship to you. B) do not use the APW3-12-1600-B2 C) read on underclock of the s-9 https://bitcointalk.org/index.php?topic=1534854.0D) if you are willing to run at an underclock the s-9 at freq 462 uses 1080 watts at the wall and hashes close to 9.9th E) all of the above means the EVGA 1300 g2 a 1300 watt psu should do the job if you clock at freq 462 it uses 110 volts to 240 volts let me find the exact number make that 100 to 240 volts. http://www.evga.com/Products/Product.aspx?pn=120-G2-1300-XR |
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Erumara
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I mine because math
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July 05, 2016, 03:43:12 PM |
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You may be stuck buying a 1600w PC PSU which will take 120-240v.
I can't say how well they will take constant voltage changes, but if it's within the range they will certainly work.
Look up an eVGA 1600w G2, they're around $360 USD.
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philipma1957
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July 05, 2016, 03:44:01 PM |
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You may be stuck buying a 1600w PC PSU which will take 120-240v.
I can't say how well they will take constant voltage changes, but if it's within the range they will certainly work.
Look up an eVGA 1600w G2, they're around $360 USD.
my method of underclocking to freq 462 and buying the evga 1300 g2 is better he saves 160 usd maybe more. he runs at 9.9 th vs 12.0 th so he loses 2 th. gear is much quieter much cooler if it is hot desert he is well off. 2 th is going to earn 160 usd in about 7 months. So he would be ahead of the game for the next 7 months. with the evga 1300 g2 and a downclock. plus much much much much less noise. and less heat |
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Finksy
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July 05, 2016, 03:55:52 PM |
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Don't buy a new miner only to under-clock it, you are essentially throwing money away if you don't gain any efficiency on it (which you can't unless you are able to provide lower than 12V through PSU)
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philipma1957
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July 05, 2016, 03:59:19 PM |
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Don't buy a new miner only to under-clock it, you are essentially throwing money away if you don't gain any efficiency on it (which you can't unless you are able to provide lower than 12V through PSU)
no that is not always true. i can show multiple cases where it is the correct solution. this is one right here. the math favors him to buy the evga 1300g2 not the evga1600 g2 |
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Finksy
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July 05, 2016, 04:09:29 PM |
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Don't buy a new miner only to under-clock it, you are essentially throwing money away if you don't gain any efficiency on it (which you can't unless you are able to provide lower than 12V through PSU)
no that is not always true. i can show multiple cases where it is the correct solution. this is one right here. the math favors him to buy the evga 1300g2 not the evga1600 g2 That only applies if you are factoring the PSU price into your ROI. Depending on your long-term intentions, PSU's can be considered equity whose actual depreciation can be subsidized over multiple generations. If you are in it for a long time, you don't need to pay off the PSU with one generation of miner. By under-clocking your miner you are reducing it's value immediately, and have already lost money. If all of what he said was true, he may be better off finding a hosting solution for the same price/kW as he pays for electricity and not have to worry about power woes or varying voltage. Pretty much all hosting facilities have access to stable 200+V, which opens the door for WAY more cost-effective PSU's than the EVGA's by a huge factor. |
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mamiakimo (OP)
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July 05, 2016, 04:10:49 PM
Last edit: July 05, 2016, 04:22:36 PM by mamiakimo |
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they said (Power supply unit is not included. You will need an ATX PSU. There are 3 PCI-e connectors for +12V DC input on each hashing board and all 3 need to be connected to the PSU for the hashboard to operate. Do not connect more than one PSU to the same hashing board!)
i think about using 3 PSU (cooler master Extreme Power Plus 500W)
each one have 1 PCI-6
and i will use pci 4 to 6 adapter to get the other
what is your opinion ?
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notlist3d
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July 05, 2016, 04:24:37 PM |
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they said (Power supply unit is not included. You will need an ATX PSU. There are 3 PCI-e connectors for +12V DC input on each hashing board and all 3 need to be connected to the PSU for the hashboard to operate. Do not connect more than one PSU to the same hashing board!)
i think about using 3 PSU (cooler master Extreme Power Plus 500W)
each one have 1 PCI-6
and i will use pci 4 to 6 adapter to get the other
what is you opinion ?
Buy a quality PSU using 3 not so good ATX psu's... just is not way to go. You are spending good money on a nice miner, getting a quality PSU is really something you should do with that. Reading your first post the APW3 is not a option as it going under 205V it is not made to operate. So what they recommend and I have been using is not a option for you. Look up again at the nice EVGA's mentioned there is a reason why people are recommending good PSU's. I personally would go for the 1600 and not underclock but that is just me. The other is a option aswell. But PSU's if you treat good you can use for multiple generations of miners, or sell just keep boxes and all your accessories. I would not touch let those cheap PSU's you mention and adapters (which we don't know quality of as no link) touch a new S9. Just wrong way to start mining with it. |
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traxor
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July 05, 2016, 04:25:35 PM |
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I just bought the EVGA 1600 and it works fine -- already comes with all the cables necessary.
I did opt for the ATX 24 Pin bridge ($5) rather than using the paper clip method.
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Tupsu
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July 05, 2016, 05:36:58 PM
Last edit: July 05, 2016, 05:50:37 PM by Tupsu |
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they said (Power supply unit is not included. You will need an ATX PSU. There are 3 PCI-e connectors for +12V DC input on each hashing board and all 3 need to be connected to the PSU for the hashboard to operate. Do not connect more than one PSU to the same hashing board!)
i think about using 3 PSU (cooler master Extreme Power Plus 500W)
each one have 1 PCI-6
and i will use pci 4 to 6 adapter to get the other
what is your opinion ?
My opinion is, you get flaming cables and burned plugs . You still get burned plugs possble on both ends. This is not a good PSU. I have used them a couple of pieces with EVGA G2 cables which are directly tinned to PSU. Then it is durable and reliable for 2x S7 blades. But after all, you're not going to get a new PSU to replace the cables. I got mine used with KNC Jupiters long time ago. Read also this thread https://bitcointalk.org/index.php?topic=1540037.0 |
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notlist3d
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July 05, 2016, 07:01:42 PM |
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Most likely you will need to order online on a PSU for a S7/S9. It depends on your market some have great local store's. But me personally I can order from newegg or amazon and get cheaper then local market and better quality. You really need to get a quality PSU to go with your S9, I like the recommended APW3 but again with your voltage going up/down under 205V it's not a option. (Your voltage kinda scares me with such large varience, makes me wonder of quality of electricity). But again look at the EVGA ones mentioned... don't go for these low quality PSU's. Ever since you mentioned 3 PSU (cooler master Extreme Power Plus 500W) + unknown quality adapters your PSU selecting has really scared me. |
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philipma1957
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'The right to privacy matters'
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July 05, 2016, 07:15:33 PM |
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they said (Power supply unit is not included. You will need an ATX PSU. There are 3 PCI-e connectors for +12V DC input on each hashing board and all 3 need to be connected to the PSU for the hashboard to operate. Do not connect more than one PSU to the same hashing board!)
i think about using 3 PSU (cooler master Extreme Power Plus 500W)
each one have 1 PCI-6
and i will use pci 4 to 6 adapter to get the other
what is your opinion ?
obey me or die. this is a joke  All kidding aside if you live in the usa and want to do that it would be really stupid cheap. but since you said you have 140 to 180 volt power you don't live in the usa |
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philipma1957
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July 05, 2016, 09:44:21 PM |
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the rm1000 is a lot better quality then the 500 watt unit you mentioned. but getting 3 to run 2 s-9's and using the amazon part is not what I would do. good luck. |
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mamiakimo (OP)
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July 05, 2016, 09:52:49 PM |
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the rm1000 is a lot better quality then the 500 watt unit you mentioned. but getting 3 to run 2 s-9's and using the amazon part is not what I would do. good luck. i talk about Cooler master V1000 its more efficiency |
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traxor
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July 05, 2016, 09:57:03 PM |
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Hey Phillip... I noticed your strong advocation for down clocking... A little off topic for the thread -- but: I live in an ungodly large home for just 2 people -- so the noise isn't even heard 99% of the time... However, I am plugging in a 1600W PSU into just a regular outlet (20 Amp circuit) for my S9. I've seen some of the awful pictures of other miners that burned -- Am I OK? Or should I consider sliding the scale down just a bit... I know it says that it pulls 1300W -- but every time I check the kilowatt meter, it was between 1138W and 1194W -- temps are fine (air conditioned environment)... I know that you are an expert -- and reading your advice about down clocking kind of mentally set me back a bit... I'd like to hash as much as possible -- without risk... Thanks!!!  |
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