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Author Topic: Connecting two PSU's. What connector?  (Read 799 times)
stef_stef
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September 01, 2017, 09:47:19 PM
 #1

Hey guys,

I was ready to order this cable:

http://www.ebay.com/itm/PSU-Power-Supply-24-pin-ATX-Motherboard-Mainboard-Adapter-Connector-Cable-1-To-2-/263065762075?epid=10006258958&hash=item3d3ff0f91b:g:sfsAAOSw6ShZV1IK

 to connect my two 750w PSU's, but I noticed new variations have come up on ebay.

http://www.ebay.com/itm/Desktop-ATX-24Pin-Dual-PSU-Power-Supply-Sync-Starter-Extender-Cable-Connector-2-/182621274337?epid=22006157212&hash=item2a851380e1:g:HVwAAOSwPh5ZHWSx

http://www.ebay.com/itm/1pcs-Power-Supply-Adapter-Connector-Dual-Triple-Relay-Link-Multiple-Add2PSU-/332278811062?epid=4006221336&hash=item4d5d5c49b6:g:JB8AAOSw~rpZSiBY


Has anyone used the other two? Which one should I go for?


THanks
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Johny101010
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September 01, 2017, 09:51:10 PM
 #2

I have used add2psu for many rigs and never had a problem.

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September 02, 2017, 12:32:11 AM
 #3

Add2PSU, i have 6 of those. Also, I would avoid the cheap knock-offs and get the real thing - http://www.add2psu.com/ Better safe than sorry

Kryptonite13
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September 02, 2017, 01:17:01 AM
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Add2PSU. Don't use cheaper knock offs. You don't want to cheap out on power supply components (PSU, Cables, connectors, etc.)
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September 02, 2017, 01:31:12 AM
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finding a good link is like finding a needle in a hay stack in a over crowed hay field in a dust storm...
 but hey i think this shows potential!
that could solve the issue im sure!
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September 02, 2017, 01:52:38 AM
 #6

Just use a paperclip and you are all set.


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September 02, 2017, 02:06:18 AM
 #7

Add2PSU, i have 6 of those. Also, I would avoid the cheap knock-offs and get the real thing - http://www.add2psu.com/ Better safe than sorry

I don't have one yet, but I love it, are you guys using the basic version or the timer delay version ?
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September 02, 2017, 02:07:49 AM
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Add2PSU, i have 6 of those. Also, I would avoid the cheap knock-offs and get the real thing - http://www.add2psu.com/ Better safe than sorry

I don't have one yet, but I love it, are you guys using the basic version or the timer delay version ?

Basic
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September 02, 2017, 02:09:57 AM
 #9

Use the Add2PSU and don't waste time with anything else. They are worth the small initial cost and have worked flawlessly on a couple of our rigs the past ~ 6 months. You could take a look at server PSUs as a cheaper overall alternative, but the noise level might be a deal breaker if you keep your rigs in your living space.

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stef_stef
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September 02, 2017, 10:02:33 AM
 #10

Use the Add2PSU and don't waste time with anything else. They are worth the small initial cost and have worked flawlessly on a couple of our rigs the past ~ 6 months. You could take a look at server PSUs as a cheaper overall alternative, but the noise level might be a deal breaker if you keep your rigs in your living space.

I wish they shipped to my location...

That is why I am forced to look at other alternatives. I know people are using the 24 ATX cable that goes from one PSU to another. No electronics in that one, and nothing that can go wrong. But I wanted to check the opinion of others on the other two
Supercoiner111
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September 02, 2017, 10:39:54 AM
 #11

You mean with a paper clip not directly you need a mediator like add2psu

Vann
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September 02, 2017, 01:17:13 PM
 #12

Add2PSU is just a reed relay to daisy chain the PSU's so they start and shutoff at the same time and share the same ground. I have the Add2PSU and the knockoffs. Both work fine. You can also make your own from an automotive relay.

http://www.jonnyguru.com/modules.php?name=NDArticles&op=Story&ndar_id=27

Using an ATX 24-pin splitter cable is another easy way to connect two PSU's.

https://www.amazon.com/Female-Power-Supply-Motherboard-Adapter/dp/B013HTWI9G

The paper clip method isn't any good because you need to turn the secondary PSU off manually after a system shutdown and the PSU's don't share the same ground.
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September 02, 2017, 04:59:11 PM
 #13

Use the Add2PSU and don't waste time with anything else. They are worth the small initial cost and have worked flawlessly on a couple of our rigs the past ~ 6 months. You could take a look at server PSUs as a cheaper overall alternative, but the noise level might be a deal breaker if you keep your rigs in your living space.

I wish they shipped to my location...

That is why I am forced to look at other alternatives. I know people are using the 24 ATX cable that goes from one PSU to another. No electronics in that one, and nothing that can go wrong. But I wanted to check the opinion of others on the other two

Have you checked on Amazon or eBay rather then buying directly from their website? That may help to find a seller that will ship to you.... for example this seller ships to allot of different countries and sells the original item not a knock off: http://www.ebay.com/itm/Add2PSU-Multiple-Power-Supply-Adapter-Run-Multiple-PC-Computer-PSU-Together/121956345611?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D41376%26meid%3D3d5a1a7176d54f19a3874e4d3ab94b63%26pid%3D100010%26rk%3D6%26rkt%3D6%26sd%3D272805715430&_trksid=p2047675.c100010.m2109

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September 02, 2017, 05:55:45 PM
 #14

....

Has anyone used the other two? Which one should I go for?

THanks

There is a good choise:
Add2PSU. Don't use cheaper knock offs. You don't want to cheap out on power supply components (PSU, Cables, connectors, etc.)
The importance of using 2PSU adapter with relay is evident: When main PSU switchs off - the secondary switchs off too

But the price is too high: 13 USD for 24 pin connector, molex connector and simple relay. Look at Aliexpress. It's only one important parameter of the relay: turn-on delay

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September 02, 2017, 08:09:42 PM
 #15

....

Has anyone used the other two? Which one should I go for?

THanks

There is a good choise:
Add2PSU. Don't use cheaper knock offs. You don't want to cheap out on power supply components (PSU, Cables, connectors, etc.)
The importance of using 2PSU adapter with relay is evident: When main PSU switchs off - the secondary switchs off too

But the price is too high: 13 USD for 24 pin connector, molex connector and simple relay. Look at Aliexpress. It's only one important parameter of the relay: turn-on delay

You don't need a relay to have the PSU's turn on and off simutanously. By connecting the power on and ground leads from the main PSU, the ATX splitter cable does the same thing. The benefit of using the Add2PSU type relay is it creates a load on the 5V line as well, which is important for cheaper PSU's that regulate voltage through the 5V line.

Better quality dual conversion PSU's convert the entire energy into a 12V single rail and then uses VRM to generate 5V and 3.3V. The cheaper PSU type converts using different taps in the transformer for each voltage and use the 5V line to regulate the voltage, instead of the 12V line like the dual conversion models. That causes voltage instability from not loading the 5V line.
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September 02, 2017, 08:32:28 PM
 #16

Just use a paperclip and you are all set.

Exactly
btcgolong
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September 02, 2017, 08:49:42 PM
 #17

....

Has anyone used the other two? Which one should I go for?

THanks

There is a good choise:
Add2PSU. Don't use cheaper knock offs. You don't want to cheap out on power supply components (PSU, Cables, connectors, etc.)
The importance of using 2PSU adapter with relay is evident: When main PSU switchs off - the secondary switchs off too

But the price is too high: 13 USD for 24 pin connector, molex connector and simple relay. Look at Aliexpress. It's only one important parameter of the relay: turn-on delay


With shipping, it is a bit pricey, but protecting our equipment is important as well. Any alternatives out there, I need about 10?
stef_stef
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September 02, 2017, 10:18:58 PM
 #18

In the end, I think I will go for this one

http://www.ebay.com/itm/PSU-Power-Supply-24-pin-ATX-Motherboard-Mainboard-Adapter-Connector-Cable-1-To-2-/263065762075?epid=10006258958&hash=item3d3ff0f91b:g:sfsAAOSw6ShZV1IK

I might order one or two add2psu Chinese knock offs, just to test how they work.


As for someone that posted, I am using an EVGA g3 PSU, so I believe I am fine with the 5v regulations
adaseb
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September 02, 2017, 11:36:14 PM
 #19

Dude, you don't need any of these adapters.

Just use a paperclip and short the green wire with ground.

Start both PSUs at the same time.

Attach a small fan to the second PSU in case the first PSU turns off to prevent it running without a load.

People have been doing this since 2011 without issues.

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September 03, 2017, 02:35:13 AM
 #20

Add2PSU is my vote.  Paperclips are kludgy.

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