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Author Topic: [WTS] ATX PSU to 2.5 or 2.1/5.5mm 12V coaxial plug power cables [New Product!!]  (Read 63407 times)
Cablez
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March 15, 2014, 08:57:46 PM
 #301

You should inform your customers that they should not be using those for dual mode mining on a single molex/sata 'chain'. For scrypt mode its perfectly fine.

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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March 15, 2014, 09:04:51 PM
 #302

I heard the gridseed setup guide slammed you with requests.

To do my part I'll be sending over a few Unicorn Hasher Temps:



Hope it helps!

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March 16, 2014, 04:13:24 AM
 #303

I could really use them..................to take over the world! Cheesy

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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March 17, 2014, 01:45:04 AM
 #304

Demand for the gridseed cables are pretty high - what's going to be the best way to form some sort of queue?

I got 500 gridseeds that need power and my 10 pack purchasers are highly interested in using atx power supplies patiently waiting to buy 50 or so of these cables Smiley
Interested in powering 50 scrypt units myself Wink
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March 17, 2014, 11:38:39 AM
 #305

Any progress with your suppliers Cablez?

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March 17, 2014, 01:25:27 PM
 #306

How many units can 1 pci-e cable power safely for scrypt mode?  Also how many can you power from molex?

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March 17, 2014, 02:18:18 PM
 #307

How many units can 1 pci-e cable power safely for scrypt mode?  Also how many can you power from molex?

If you are looking to be conservative I would say 60w per wire pair within the PCIe connector. At roughly 10w per device that is 6 units per wire pair and 18 units total, conservatively. It is possible to go up to 80w per wire pair but that just stresses the housings, pins and wires and will yield lower MTBF rates.

Looking at a molex 'chain' there is only a single 12v wire pair to be utilized there but it is shared. This is going to limit you to 60w on the entire 'chain' (usually 3 molex plugs and a floppy).

Hope that helps.

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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March 17, 2014, 06:30:41 PM
 #308

Cablez are you selling Adapters for the Gridseeds? What size jack do they use? Just a standard 2.5mm DC?

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Cablez
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March 17, 2014, 11:57:10 PM
 #309

Cablez are you selling Adapters for the Gridseeds? What size jack do they use? Just a standard 2.5mm DC?

I will be selling adapters for the gridseeds very soon.  I will have a finalized quote tomorrow which I intend to just turnaround and pay for expedited work. Things are finally moving forward, Yay!

The jack can be either 2.5mm or 2.1mm. It has been decided that the 2.1mm plugs fit better in the device than the 2.5mm ones even though both work.

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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March 18, 2014, 04:21:35 AM
 #310

Interested in some cables, probably enough to power 40-50 gridseeds!
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March 19, 2014, 02:21:28 AM
 #311

How many units can 1 pci-e cable power safely for scrypt mode?  Also how many can you power from molex?

If you are looking to be conservative I would say 60w per wire pair within the PCIe connector. At roughly 10w per device that is 6 units per wire pair and 18 units total, conservatively. It is possible to go up to 80w per wire pair but that just stresses the housings, pins and wires and will yield lower MTBF rates.

Looking at a molex 'chain' there is only a single 12v wire pair to be utilized there but it is shared. This is going to limit you to 60w on the entire 'chain' (usually 3 molex plugs and a floppy).

Hope that helps.

If I understand this correctly this should be possible right?

PCIe60w
60w
60w
Sata60w
Molex60w
CPU60w
60w
CPU?60w
60w
ATX60w
60w

CPU? is for a x8 CPU powercord vs a x4 CPU power cord

Which would lead me to believe this should be possible:

12V Watt12V Watt5V Watt
Gridseed7
Current PSU426110
Minimum PSU40050
Total32040
Miners40
gridseedsHubController12V Total
PCIe5351045
53535
5351045
Sata5352035
Sata5351045
Molex5352035
CPU5351045
53535

40 Gridseeds
4   Hubs
4   Controllers
(this configruation is for a Corsair CS450M by the way)

Same data in an editable google spreadsheets file: https://docs.google.com/spreadsheet/ccc?key=0AtUI9gzMvUJ7dGtPZENPQWhBR1JJVF9xX3M0czhEUGc&usp=sharing .
the coloured cells are automatically calculated so please do not put any numbers in them.

This is also made without knowledge of the Hub and controllers power consumption so I just counted them for 10w to have a number.
Also: I made this with your molex to USB power connectors in mind. That's why all the controllers are counted into the one molex link.

Am I right in thinking this is possible?
and if so: will you be supplying cables to do this kind of stuff?
(for example: cables that go from Sata power to either 5x 2.1mm or just to 2.1mm so you can plug in an extension for 5?)

I'd like to hear your opinion

Just for fun:
Cables needed to do this:
1x PCIe female to 3x 2.1mm male
2x Sata male to 2.1mm male
1x Sata male to 2x Molex female splitter
1x Molex male to 2.1mm male
1x Molex male to 2x Molex female splitter
4x Molex male to micro usb
1x CPU female to 2x 2.1mm male
8x 2.1mm female to 5x 2.1mm male
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March 19, 2014, 04:08:14 PM
 #312

any word on this?  I'd like to get some - thanks.
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March 20, 2014, 03:37:16 PM
 #313

I would like to order 5 of these cables - but with 4 plugs on each. Pm methe cost and I'll send BTC or LTC

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March 21, 2014, 12:44:00 AM
 #314

MAJOR UPDATE:

Well this is not the post that I had dreamed of or wanted to write up.  After two days of negotiations with two different companies (post quote) I see now that I cannot produce a quality product on a more reasonable timeline and cost than my newly joined competitors.  It is a sad day for me twofold as one, I pride myself on doing a quality job for cheaper than most and two, my desire to help the mining community progress has been one of my main tenets since getting involved in Bitcoin.

As it stands now I will not be getting my gridseed cable designs mass produced as they would be delayed by several weeks at best and have a unit cost far more than even I would be willing to pay retail on top of the miner cost. With outlays upwards of $20k I just am not in a position to take on that much risk. I apologize to all who have shown interest in my gridseed cables for letting you down but at least there seem to be alternatives available.

The other sources use a similar design to mine and they should be ready much sooner. I do not advocate for them as I only trust my own work so please be attentive to detail.


I will still offer up my services for custom work if you would like and I will have some small batches of various mining cables available shortly.

As always Happy Mining. Smiley

MAJOR UPDATE:

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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March 21, 2014, 12:48:23 AM
 #315

MAJOR UPDATE:

Well this is not the post that I had dreamed of or wanted to write up.  After two days of negotiations with two different companies (post quote) I see now that I cannot produce a quality product on a more reasonable timeline and cost than my newly joined competitors.  It is a sad day for me twofold as one, I pride myself on doing a quality job for cheaper than most and two, my desire to help the mining community progress has been one of my main tenets since getting involved in Bitcoin.

As it stands now I will not be getting my gridseed cable designs mass produced as they would be delayed by several weeks at best and have a unit cost far more than even I would be willing to pay retail on top of the miner cost. With outlays upwards of $20k I just am not in a position to take on that much risk. I apologize to all who have shown interest in my gridseed cables for letting you down but at least there seem to be alternatives available.

The other sources use a similar design to mine and they should be ready much sooner. I do not advocate for them as I only trust my own work so please be attentive to detail.


I will still offer up my services for custom work if you would like and I will have some small batches of various mining cables available shortly.

As always Happy Mining. Smiley

MAJOR UPDATE:


Sorry to hear that Cablez, I was rooting for you. Good luck with your future endeavors. I love every cable I've bought from you and will continue to give you business in the future.

Cheers

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March 21, 2014, 01:12:49 AM
 #316

Thanks for the update Cablez. Your a standup guy and I will contact you for custom cables when I finalize my case design.

ADutchGamer
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March 21, 2014, 01:26:11 AM
 #317

How many units can 1 pci-e cable power safely for scrypt mode?  Also how many can you power from molex?

If you are looking to be conservative I would say 60w per wire pair within the PCIe connector. At roughly 10w per device that is 6 units per wire pair and 18 units total, conservatively. It is possible to go up to 80w per wire pair but that just stresses the housings, pins and wires and will yield lower MTBF rates.

Looking at a molex 'chain' there is only a single 12v wire pair to be utilized there but it is shared. This is going to limit you to 60w on the entire 'chain' (usually 3 molex plugs and a floppy).

Hope that helps.

Hey Cablez I've got a question:

where did you come up with the 60W per wire pair?
all the documentation I can find says PCIe spec is 2.3 amps for 18AWG wire so at 12V that would be about 25W per wire pair.

I hope you'll reply to this because I would like to make the monster from my previous post Smiley
40 units on a 450W PSU Smiley

No cablez cablez makes me sad but it gives me a challenge by doing it myself Smiley
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March 21, 2014, 03:17:47 AM
 #318

Hey Cablez I've got a question:

where did you come up with the 60W per wire pair?
all the documentation I can find says PCIe spec is 2.3 amps for 18AWG wire so at 12V that would be about 25W per wire pair.

I hope you'll reply to this because I would like to make the monster from my previous post Smiley
40 units on a 450W PSU Smiley

No cablez cablez makes me sad but it gives me a challenge by doing it myself Smiley

Actually the 60w is a conservative number. Back in the Bitcoin FPGA days I routinely ran 80-85w per wire pair in a PCIe, those BFL devices were such power hogs. Smiley

The PCIe spec is very very conservative mostly due to the fact that pcb design can hit power limitations far faster than free wires/connectors.

That being said, the first limitation you will hit for power adapters is on the PCIe pins which are typically rated for 9A but are all supposed to be 'HCS' since 2005 so they should be rated at 11A. I wouldn't push it that far though. The next limitation would be the 18AWG wire itself which is rated for 10A in short runs. Finally, the last limitation is the barrel plugs themselves which come in a whole host of ratings but I typically go for the 6 or 7A ones to be safe.

I hope that helps clear it up.

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
CartmanSPC
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March 21, 2014, 06:36:12 AM
 #319

As a quick solution I am thinking of taking the modular cables from my AX1200i and cutting off the PCIe connector then using those 2.1mm x 5.5mm DC barrel plug adaptors. 3 per PCIe connector for now....may look for 5 way splitters later.

...but I can seem to find any specs on them. How do I make sure they are at least 6A or more?


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March 21, 2014, 01:07:07 PM
 #320

MAJOR UPDATE:

Well this is not the post that I had dreamed of or wanted to write up.  After two days of negotiations with two different companies (post quote) I see now that I cannot produce a quality product on a more reasonable timeline and cost than my newly joined competitors.  It is a sad day for me twofold as one, I pride myself on doing a quality job for cheaper than most and two, my desire to help the mining community progress has been one of my main tenets since getting involved in Bitcoin.

As it stands now I will not be getting my gridseed cable designs mass produced as they would be delayed by several weeks at best and have a unit cost far more than even I would be willing to pay retail on top of the miner cost. With outlays upwards of $20k I just am not in a position to take on that much risk. I apologize to all who have shown interest in my gridseed cables for letting you down but at least there seem to be alternatives available.

The other sources use a similar design to mine and they should be ready much sooner. I do not advocate for them as I only trust my own work so please be attentive to detail.


I will still offer up my services for custom work if you would like and I will have some small batches of various mining cables available shortly.

As always Happy Mining. Smiley

MAJOR UPDATE:


Sorry to hear that Cablez, I was rooting for you. Good luck with your future endeavors. I love every cable I've bought from you and will continue to give you business in the future.

Cheers


ever heard of kickstarter.com

kickstarter will help you get your $20k in short order.

and also startup.com

jeff

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