The PCI-e needs power? | Bitcointalksearch.org

adaseb

legendary

Activity: 3808

Merit: 1723

Quote from: jmigdlc99 on May 22, 2018, 10:05:50 PM

Quote from: sebas1382000 on May 22, 2018, 03:50:33 PM

In a way yes, I have 6 rx 580 and two power supplies of 1000w, but I would like the 6 to work with a single power supply

Because that way I avoid having to bridge the power suplies

You are risking your GPUs, entire mining rig, and even your house by running 6x 580s on a single 1000w PSU. Even with BIOS mods and extreme undervolting, you still risk overloading your PSU and it may explode or catch fire. Either sell those 2 PSUs and get a good quality 1200w PSU or simply bridge both of your power supplies.

Trying to save on power consumption by eliminating PCIE connections is also not an option.

You can do 6 of the RX series GPUs with a 1000Watt PSU no problem. With a proper undervolt it should consume about 900 Watts or so.

If you have a quality brand then running it at that load should be no problem, also keep in mind that about 10% of that is losses in the PSU itself so in reality it uses only 800 Watts or so.

Regarding the PCIe riser power he should just connect those to the molex connections and the rest to the unused +12V and +5V wires he has left from the modular connections.

jmigdlc99

sr. member

Activity: 784

Merit: 282

Quote from: sebas1382000 on May 22, 2018, 03:50:33 PM

In a way yes, I have 6 rx 580 and two power supplies of 1000w, but I would like the 6 to work with a single power supply

Because that way I avoid having to bridge the power suplies

You are risking your GPUs, entire mining rig, and even your house by running 6x 580s on a single 1000w PSU. Even with BIOS mods and extreme undervolting, you still risk overloading your PSU and it may explode or catch fire. Either sell those 2 PSUs and get a good quality 1200w PSU or simply bridge both of your power supplies.

Trying to save on power consumption by eliminating PCIE connections is also not an option.

Blazin

newbie

Activity: 44

Merit: 0

Quote from: deskless on May 22, 2018, 04:19:06 PM

The risers comes has to connect to PSU. What is that cable called? It has 6 pins.

Some risers connect directly.. Some connect using a wire that comes with each of the riser.

They are typically referred to as PCI-E power cables. There's a good reason power-hungry devices like graphics cards use those. They are better than molex in my opinion.

Iannn

jr. member

Activity: 52

Merit: 1

I was using SATA for a bit when I was stupid and one melted, popped, sizzled and sent a bunch of smoke out of it. Luckily it did not damage anything but yeah do not power your risers with SATA. Just do it right and use the 6 pin connectors. And only power at most 2 risers from one power cord coming out of the psu. I switched over to 94% efficient HP server psus with breakout boards to run all my gpu's and risers. I use a 650w Gold EVGA to power the motherboard and hard drive. The system is working great. Very happy with the change.

deskless

jr. member

Activity: 279

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The risers comes has to connect to PSU. What is that cable called? It has 6 pins.

Some risers connect directly.. Some connect using a wire that comes with each of the riser.

leowonderful

legendary

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Bitcoin FTW!

Go with molex connectors if you can like Coyn said above unless you're looking to have issues. It's always a good choice to get the best for power delivery for your risers- they're supporting the most expensive part of your mining rig (GPUS), after all.

If you had read the link he posted, you'd see this:

Code:

Do not use any included harnesses that converts to SATA

Do not use any included harnesses that converts to SATA

Do not use any included harnesses that converts to SATA

Both are not as good compared to just getting a 6-pin straight from the PSU (which is where server PSUs can come in), but I see you're in a bit of a tricky situation with your PSU. Molex is good enough in 99% of cases.

smoolae

full member

Activity: 602

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Always do anything you can to stay far away from SATA riser connectors, MOLEX is a bit better and the best and only one that should be used is a PCI-E riser connector. The last one can really take some "beating" before starting any fires or crap like that in general Wink

sebas1382000

newbie

Activity: 75

Merit: 0

Quote from: deskless on May 22, 2018, 01:49:47 PM

Quote from: sebas1382000 on May 22, 2018, 01:13:59 PM

Quote from: deskless on May 22, 2018, 12:56:31 PM

Quote from: sebas1382000 on May 22, 2018, 12:30:48 PM

I open this post to ask about this. Because watching several Youtube videos I realize that some miners feed their PCI-e with satas and others simply do not.
Is it necessary or not to feed them with electricity?

if you are talking about PCIE-adapter that will connect the GPUs to the motherboard, you would need it to power.

Yes, but I have seen miners that feed into GPUs without powering the PCI-E adapter, but I better not risk it and do what you say

The risers sold on web comes with Sata connector. The PSU sold on web comes with Sata cables. Why you don't want to use them? Are you trying to save on electricity?

In a way yes, I have 6 rx 580 and two power supplies of 1000w, but I would like the 6 to work with a single power supply

Because that way I avoid having to bridge the power suplies

Coyn

jr. member

Activity: 66

Merit: 1

If you want to start fires, please connect all your GPU's with SATA.
If you dont want to start fires, please read this post: https://www.reddit.com/r/EtherMining/wiki/hardware/risers

Sata cables are made to power HDD and SSD. Maximum of 54 watts/4.5 amps.
Molex are capable of running 1-2 GPU (or 3...), its safer but not perfect.

Use the PCI-e cable for powering the riser. It's the best way.

deskless

jr. member

Activity: 279

Merit: 1

Quote from: sebas1382000 on May 22, 2018, 01:13:59 PM

Quote from: deskless on May 22, 2018, 12:56:31 PM

Quote from: sebas1382000 on May 22, 2018, 12:30:48 PM

I open this post to ask about this. Because watching several Youtube videos I realize that some miners feed their PCI-e with satas and others simply do not.
Is it necessary or not to feed them with electricity?

if you are talking about PCIE-adapter that will connect the GPUs to the motherboard, you would need it to power.

Yes, but I have seen miners that feed into GPUs without powering the PCI-E adapter, but I better not risk it and do what you say

The risers sold on web comes with Sata connector. The PSU sold on web comes with Sata cables. Why you don't want to use them? Are you trying to save on electricity?

sebas1382000

newbie

Activity: 75

Merit: 0

Quote from: deskless on May 22, 2018, 12:56:31 PM

Quote from: sebas1382000 on May 22, 2018, 12:30:48 PM

I open this post to ask about this. Because watching several Youtube videos I realize that some miners feed their PCI-e with satas and others simply do not.
Is it necessary or not to feed them with electricity?

if you are talking about PCIE-adapter that will connect the GPUs to the motherboard, you would need it to power.

Yes, but I have seen miners that feed into GPUs without powering the PCI-E adapter, but I better not risk it and do what you say

deskless

jr. member

Activity: 279

Merit: 1

Quote from: sebas1382000 on May 22, 2018, 12:30:48 PM

I open this post to ask about this. Because watching several Youtube videos I realize that some miners feed their PCI-e with satas and others simply do not.
Is it necessary or not to feed them with electricity?

if you are talking about PCIE-adapter that will connect the GPUs to the motherboard, you would need it to power.

sebas1382000

newbie

Activity: 75

Merit: 0

I open this post to ask about this. Because watching several Youtube videos I realize that some miners feed their PCI-e with satas and others simply do not.
Is it necessary or not to feed them with electricity?

Topic: The PCI-e needs power? (Read 236 times)