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xzempt
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October 28, 2013, 06:10:32 PM |
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i was actually referring to blades pricing...
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fractalbc
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October 28, 2013, 07:32:52 PM |
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I am not sure this is the best place for this discussion, but it is here so what the heck. Any idea what gauge the wires are? I have a 5v30a ps but the AWGis 21.. im being told too thin of a wire =/ I doubt that is correct. 21 AWG according to the table I just looked at will handle 49 amps, but not sure at which voltage... AWG is used for solid wires, chances are good that the multitude of wires coming out of that PSU over to the ATX connector is NOT solid but stranded, this the AWG measure isn't applicable... Maybe there are some electricians here who can chime in... ATX power supplies will typically use 16 or 18 AWG wire. Better ones use 16AWG. It is always stranded. I believe the ATX spec calls for 16. I am not sure what table you are looking at but 21 AWG can't handle 49 amps. More like 5 or 6. You can ignore the "free air" column if there is one and look at the "enclosed" or "bundle" column. 16 AWG is good for 10 or 12 amps. The insulation is what determines the maximum voltage, not the wire size. The wire on a random ATX power supply I just looked at is rated at 300v. I hope these hubs have an internal DC-DC converter and don't use the 5V rail exclusively. This is unlikely due to cost constraints.
I hear they don't which is mixed blessing. The good news is it lets you push as many amps as the connector / traces will carry by providing a bigger power supply. The better news is it doesn't limit the power consumption the capacity of the DC-DC converter. The bad news is the ATX connector limits the current to 8 amps per pin with 16 AWG wire ( http://www.molex.com/pdm_docs/ps/PS-45750-001.pdf ) and there are only 5 pins for the 5v rail making the total you can reasonably expect before you risk melting the connector 40 amps. Google "tyan tiger mp melted connector" if you want to read stories about what happens if you push too much. http://imageshack.us/photo/my-images/179/p10101811pf.jpg/ for those who just want the picture. The harsh reality is there are few modern ATX power supplies with more than 20 amps on the 5V rail and precious few with 30 or more. There are a few like the antec basiq linked above but you have to check the specifications very carefully. |
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CanaryInTheMine (OP)
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Activity: 2352
Merit: 1060
between a rock and a block!
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October 28, 2013, 08:42:05 PM |
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I am not sure this is the best place for this discussion, but it is here so what the heck. Any idea what gauge the wires are? I have a 5v30a ps but the AWGis 21.. im being told too thin of a wire =/ I doubt that is correct. 21 AWG according to the table I just looked at will handle 49 amps, but not sure at which voltage... AWG is used for solid wires, chances are good that the multitude of wires coming out of that PSU over to the ATX connector is NOT solid but stranded, this the AWG measure isn't applicable... Maybe there are some electricians here who can chime in... ATX power supplies will typically use 16 or 18 AWG wire. Better ones use 16AWG. It is always stranded. I believe the ATX spec calls for 16. I am not sure what table you are looking at but 21 AWG can't handle 49 amps. More like 5 or 6. You can ignore the "free air" column if there is one and look at the "enclosed" or "bundle" column. 16 AWG is good for 10 or 12 amps. The insulation is what determines the maximum voltage, not the wire size. The wire on a random ATX power supply I just looked at is rated at 300v. I hope these hubs have an internal DC-DC converter and don't use the 5V rail exclusively. This is unlikely due to cost constraints.
I hear they don't which is mixed blessing. The good news is it lets you push as many amps as the connector / traces will carry by providing a bigger power supply. The better news is it doesn't limit the power consumption the capacity of the DC-DC converter. The bad news is the ATX connector limits the current to 8 amps per pin with 16 AWG wire ( http://www.molex.com/pdm_docs/ps/PS-45750-001.pdf ) and there are only 5 pins for the 5v rail making the total you can reasonably expect before you risk melting the connector 40 amps. Google "tyan tiger mp melted connector" if you want to read stories about what happens if you push too much. http://imageshack.us/photo/my-images/179/p10101811pf.jpg/ for those who just want the picture. The harsh reality is there are few modern ATX power supplies with more than 20 amps on the 5V rail and precious few with 30 or more. There are a few like the antec basiq linked above but you have to check the specifications very carefully. thanks for the info!!! much appreciated |
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CanaryInTheMine (OP)
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October 28, 2013, 10:56:06 PM |
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Dropping off USPS packages..  |
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damagebritain
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October 29, 2013, 02:19:44 AM |
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So I'm considering buying, could you point me at a power supply online somewhere that would be compatible? If the power supply has two 6 pin connectors could it power two of the 49 port hubs at max capacity? hoping you guys would know.
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CanaryInTheMine (OP)
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October 29, 2013, 07:42:19 PM
Last edit: October 31, 2013, 04:58:27 PM by CanaryInTheMine |
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philipma1957 has found this PSU:
http://www.mcmelectronics.com/product/58-12860
use code afc909 get a 15% discount to under 14 bucks plus shipping!
It should be tested Wed/Thur to know for sure, but from the specs, it looks to be a great PSU to power one of these hubs (for the $).DO NOT BUY ABOVE PSU. it does not work. |
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CanaryInTheMine (OP)
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between a rock and a block!
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October 29, 2013, 08:35:33 PM |
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Here are the stats on the 49 port HUB (pic above) running for 18+ hrs so far:  |
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xyzzy099
Legendary
 Online
Activity: 1062
Merit: 1041
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October 29, 2013, 08:49:01 PM |
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Here are the stats on the 49 port HUB (pic above) running for 18+ hrs so far:
It's interesting that all your erupters show up as the old Emerald (BEE) erupters. All of mine show up as BES (Block Erupter Sapphire). No idea if it even makes a difference... |
Libertarians: Diligently plotting to take over the world and leave you alone.
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CanaryInTheMine (OP)
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between a rock and a block!
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October 29, 2013, 09:30:16 PM |
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Here are the stats on the 49 port HUB (pic above) running for 18+ hrs so far:
It's interesting that all your erupters show up as the old Emerald (BEE) erupters. All of mine show up as BES (Block Erupter Sapphire). No idea if it even makes a difference... Interesting observation... I am running this on bfgminer ver 3.1.3 and using "-S erupter:all" command... one of these 2 things is probably causing them to get the BEE label instead of BES. |
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CanaryInTheMine (OP)
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Activity: 2352
Merit: 1060
between a rock and a block!
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October 30, 2013, 04:40:43 AM |
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Today's orders were dropped off at USPS before 7 PM.
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philipma1957
Legendary
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'The right to privacy matters'
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October 30, 2013, 04:44:06 AM |
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philipma1957 has found this PSU: http://www.mcmelectronics.com/product/58-12860 use code afc909 get a 15% discount to under 14 bucks plus shipping! It should be tested Wed/Thur to know for sure, but from the specs, it looks to be a great PSU to power one of these hubs (for the $). Mine is due to my home on weds I will test it and post in this thread and in crazy guy's thread. they had a lot in stock . I just went to the link and added 200 to my cart they only have 153 in stock... So waiting may be smarter then buying. My results should post in about 20 hours. |
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mackstuart
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October 30, 2013, 05:28:23 AM |
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mackstuart, 10, .35, 1FqQ4epQphzB8b9tJZHgsPMxyZP5WtrVnu
9fa8bffa84c8bf7acc996e03843a453ae22453e23b0f41bd2e3b11da665b1703
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Chronikka
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October 30, 2013, 05:35:01 AM |
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philipma1957 has found this PSU: http://www.mcmelectronics.com/product/58-12860 use code afc909 get a 15% discount to under 14 bucks plus shipping! It should be tested Wed/Thur to know for sure, but from the specs, it looks to be a great PSU to power one of these hubs (for the $). Mine is due to my home on weds I will test it and post in this thread and in crazy guy's thread. they had a lot in stock . I just went to the link and added 200 to my cart they only have 153 in stock... So waiting may be smarter then buying. My results should post in about 20 hours. Thanks! |
"The true sign of intelligence is not knowledge but imagination" -Albert Einstein
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philipma1957
Legendary
Offline
Activity: 4102
Merit: 7764
'The right to privacy matters'
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October 30, 2013, 02:42:22 PM |
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philipma1957 has found this PSU: http://www.mcmelectronics.com/product/58-12860 use code afc909 get a 15% discount to under 14 bucks plus shipping! It should be tested Wed/Thur to know for sure, but from the specs, it looks to be a great PSU to power one of these hubs (for the $). Mine is due to my home on weds I will test it and post in this thread and in crazy guy's thread. they had a lot in stock . I just went to the link and added 200 to my cart they only have 153 in stock... So waiting may be smarter then buying. My results should post in about 20 hours. Thanks! you are welcome the psu part should arrive in about 7 hours. I will post. |
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CanaryInTheMine (OP)
Donator
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Activity: 2352
Merit: 1060
between a rock and a block!
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October 30, 2013, 04:53:09 PM |
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packing USPS orders...  |
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camolist
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October 30, 2013, 05:59:26 PM |
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"out for delivery" looks like delivery will be about 48 hours after payment. maybe BFL needs to make a new hire corsair 1200 claims 30 amp on 5v up to 180 watts between 3 and 5 volts and it's currently only being used on 12 volt so should be set will update with pictures on delivery |
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CanaryInTheMine (OP)
Donator
Legendary
Offline
Activity: 2352
Merit: 1060
between a rock and a block!
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October 30, 2013, 06:02:07 PM |
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"out for delivery" looks like delivery will be about 48 hours after payment. maybe BFL needs to make a new hire corsair 1200 claims 30 amp on 5v up to 180 watts between 3 and 5 volts and it's currently only being used on 12 volt so should be set will update with pictures on delivery I am often imitated, but never duplicated!  the 30 amp 5v ATX should work like a champ for you! 122.5/180 = 68% |
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CanaryInTheMine (OP)
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Activity: 2352
Merit: 1060
between a rock and a block!
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October 30, 2013, 11:46:22 PM |
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Awesome!! warms my heart!! P.S. todays packages went out about 30 mins ago... |
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