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Author Topic: Is this setup safe ? (Molex to Pcie adapter and satas...)  (Read 142 times)
gameboy366
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May 08, 2018, 04:45:29 AM
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Hello, I recently got two new Antec Earthwatts Gold Pro 750w from antec service centre in exchange for two dead True Power Classic 750w (for free !). Now TP classic was non modular and so it had loads of cable to power my 12*1050ti rig safely.

Now this semi-modular PSUs have very few cables for my need. It only have 4 PCI-E each so only 8 of my cards will be powered. It has 2 molex cable on each PSU, so I was thinking of using a molex to Pcie adapter (one molex for one pcie NOT 2 molex for one pcie) to power my 4 gpus. I mean 1050ti are very low power right ?

Earlier I was powering my risers with molex but now I will have to use sata. I was powering two of my riser with sata earlier too.
So one my connection will be one molex power my gpu with molex to 6pin pcie adapter and then power two riser with sata. So there are 3 connection on single cable. Is this extremely dangerous or it's alright- not too bad but not too good. I don't want to buy another PSU. Again I think 1050ti are low power.

Thank You
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Steelctyboy
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May 14, 2018, 01:55:22 AM
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I'm relatively new to mining (1 month in) so take my advice as you may...

I've read to never power more than 2 gpu's on 1 power cable and I've read to never use a molex to sata adapter connection (power conversion can get funky and overheat as molex draws more than sata and sata has a hard time converting). For my first 6 gpu rig set up I used 6 pin to sata adapters off my risers to the my 1200w Corsair PSU.

After more reading I ordered another 850w Corsair PSU and ordered more molex connectors (no adapters) to power my risers straight into my 2 PSU's (3 risers per). I now don't have any GPU's powered by more than 1 cable or any more than 1 riser powered by 1 molex cable. Now I've read that powering 2 GPU's one 1 molex power cable is fine but never with any adapters. Also 2 gpu's with 6 pin to sata adapters should be ok but never 3 on the same cable. My first set up I had to power risers on 1 sata cable because I didn't have enough ports on the 1200w corsair. It ran fine and never had any issues.

Anyway, ordering another PSU so I could go 1 cable for my GPU's and one cable for each riser is probably overkill but I wanted to ensure it was safe.

I had some reliable help from the guys at maxhash where I mine that helped me out with this.

Best of luck to you. Hope I could help add value in some way.
leonix007
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May 14, 2018, 03:58:47 AM
 #3

If I were you my setup would be like this

in PSU1,

2 PCIE cables to 2 GPU's, using Splitter powering up their own risers, 2 PCI-e cables powering up 4 GPU's using Splitters and 2 molex cables powering 4 usb risers

same scene on PSU2
jillscarbrough
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May 14, 2018, 07:29:38 AM
 #4

Agree with Leonix, that PSU has 2 x 6+2 and 2 x 6 (2 x 8pins and 2x 6pins) is it right?

If that's right, you can use Y splitter (PCIe 8 to 2 x 6) so, you'll have 6 x PCIe 6pins for each PSU. That was enough for powering all of your 1050 Ti. Your cards have single 6 pins connector, right?

For risers, you can follow Leonix advice, or if you want to stick using SATA, I think is okay with 1050 Ti.
gameboy366
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May 14, 2018, 08:54:33 AM
Last edit: May 14, 2018, 09:21:08 AM by gameboy366
 #5

Just wanted to make sure are you guys recommending this type of cable www.amazon.com/PCI-Express-Video-Y-Splitter-Adapter-Supply/dp/B00VWEGKD4?tag=googinhydr18418-21&tag=googinkenshoo-21&ascsubtag=4841f33c-f010-457a-89d7-1ff81c852165

EACH of my PSU has 4*8(6+2).
This is my PSU - http://store.antec.com/earthwatts-gold/earthwatts-gold-pro-750w.html

I am already using the setup I mentioned above for past 2 days but this looks better.
m.vina
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May 14, 2018, 08:56:58 AM
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Just wanted to make sure are you guys recommending this type of cable www.amazon.com/PCI-Express-Video-Y-Splitter-Adapter-Supply/dp/B00VWEGKD4?tag=googinhydr18418-21&tag=googinkenshoo-21&ascsubtag=4841f33c-f010-457a-89d7-1ff81c852165

Is that safe ?  Again EACH of my PSU has 4*8(6+2).
This is my PSU - http://store.antec.com/earthwatts-gold/earthwatts-gold-pro-750w.html

I am already using it with the setup I mention above for past 2 days but this looks better.

Yes that should be safe. Same as with all the other adapters you will be able to buy online, you won't really know the quality unless you strip the wires and check or until it burns itself up. I wouldn't worry about it though because people have been using these adapters for years now. I personally have been using this for around 6 months now and without problem. They're all the same mate.

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jillscarbrough
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May 14, 2018, 09:19:45 AM
 #7

EACH of my PSU has 4*8(6+2).
This is my PSU - http://store.antec.com/earthwatts-gold/earthwatts-gold-pro-750w.html

That's better than what I thought


Sorry I don't have the same cards with yours, are you cards using 6 pins power PCIe?

if it's true,

The product at your link is 6 Pin to 2 x 8 Pin (6+2), Will be better using 8 pins to 2 x 6 Y splitter.
gameboy366
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May 14, 2018, 09:27:54 AM
 #8

EACH of my PSU has 4*8(6+2).
This is my PSU - http://store.antec.com/earthwatts-gold/earthwatts-gold-pro-750w.html

That's better than what I thought


Sorry I don't have the same cards with yours, are you cards using 6 pins power PCIe?

if it's true,

The product at your link is 6 Pin to 2 x 8 Pin (6+2), Will be better using 8 pins to 2 x 6 Y splitter.
My galax 1050ti EXOC requires a single 6pin for power. So with 2 of these cables I can power 6 gpus from 4 PCIe cables.
jillscarbrough
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May 14, 2018, 09:38:48 AM
 #9

My galax 1050ti EXOC requires a single 6pin for power. So with 2 of these cables I can power 6 gpus from 4 PCIe cables.

Yeah, that's what I mean. With that splitter (at your link), you were splitting 6pins PCIe (75 W), Will be better to split 8 pins (150 W) to 2 x 6 pins, safer.

gameboy366
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May 14, 2018, 09:44:20 AM
Last edit: May 14, 2018, 09:59:17 AM by gameboy366
 #10

My galax 1050ti EXOC requires a single 6pin for power. So with 2 of these cables I can power 6 gpus from 4 PCIe cables.

Yeah, that's what I mean. With that splitter (at your link), you were splitting 6pins PCIe (75 W), Will be better to split 8 pins (150 W) to 2 x 6 pins, safer.


Yes but all of the 8 pin to two 6 pin or 6+2 pin adapter says that 8 pin is made to go in modular PSU or something like that, maybe you are right.

EDIT : looks like this is just the thing I need. Should I get 8 pin to dual 6+2 pin or 8 pin to dual 6 pin. Will 6+2 pin cause any problem ?

Cause I can find a 8 pin to dual 6+2 pin easily.
jillscarbrough
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May 14, 2018, 09:56:30 AM
 #11

My galax 1050ti EXOC requires a single 6pin for power. So with 2 of these cables I can power 6 gpus from 4 PCIe cables.

Yeah, that's what I mean. With that splitter (at your link), you were splitting 6pins PCIe (75 W), Will be better to split 8 pins (150 W) to 2 x 6 pins, safer.

Yes but all of the 8 pin to two 6 pin or 6+2 pin adapter says that 8 pin is made to go in modular PSU or something like that, maybe you are right.

The one that I mean is PCIe splitter 8 to 6 or 8 to 8 (6+2). Something like this:



You can use it to powering your cards, safer since you splitting 8 pins PCIe.
gameboy366
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May 14, 2018, 10:01:05 AM
 #12

My galax 1050ti EXOC requires a single 6pin for power. So with 2 of these cables I can power 6 gpus from 4 PCIe cables.

Yeah, that's what I mean. With that splitter (at your link), you were splitting 6pins PCIe (75 W), Will be better to split 8 pins (150 W) to 2 x 6 pins, safer.

Yes but all of the 8 pin to two 6 pin or 6+2 pin adapter says that 8 pin is made to go in modular PSU or something like that, maybe you are right.

The one that I mean is PCIe splitter 8 to 6 or 8 to 8 (6+2). Something like this:



You can use it to powering your cards, safer since you splitting 8 pins PCIe.
Which one will be better dual 6+2 or dual 6pin only. I can find 8 pin to dual 6+2 easily.
jillscarbrough
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May 14, 2018, 10:04:20 AM
 #13

Which one will be better dual 6+2 or dual 6pin only. I can find 8 pin to dual 6+2 easily.

Both same for your current cards (1050 Ti). So, better to use the one that you were easy to find it (8 pins to dual 6+2 ).
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