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Lhnelson2001

Can I just use a single PCI-E cable?

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Posted · Original PosterOP

So I have an EVGA 1080 card and it has two 8 pin power connectors. I have been using, and this is a bit hard to explain so I’m going to peace-meal it.
2 separate pci-e cables.
They both have two 6+2 connectors on the ends.
I have each of them plugged into an adapter that takes two 6 pin connectors and turns them into an 8 pin.
These 8 pin connectors are plugged into my gpu and it has been working.

So my question is for cable management purposes, can I get rid of the adapters and one of the cables, and just use a single cable that has two 6+2 gpu power cables on the end?

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2 minutes ago, Lhnelson2001 said:

They both have two 6+2 connectors on the ends.
I have each of them plugged into an adapter that takes two 6 pin connectors and turns them into an 8 pin.
These 8 pin connectors are plugged into my gpu and it has been working.

That's... Painful.

 

Ditch the adapter. The 6+2pin cable combines to form an 8pin cable. You just click the +2 bit together with the 6pin and bob's your uncle an 8pin. The reason they do it as a 6+2pin connector instead of an 8pin connector is for graphics cards that only have a 6pin connector. Having it 6+2pin arrangement means you can detach or attach the +2 depending on if you need it.

 

4 minutes ago, Lhnelson2001 said:

So my question is for cable management purposes, can I get rid of the adapters and one of the cables, and just use a single cable that has two 6+2 gpu power cables on the end?

Yes.


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I think i'd use the two adapters. It's not like you're entering a cable management contest

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The 1080 is only a 180W card, so you should be fine with a single cable. The general recommendation is to use multiple cables for GPUs with a TDP higher than 225W.


 

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Just use a single cable, it can do 300w anyway.


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17 minutes ago, emosun said:

I think i'd use the two adapters. It's not like you're entering a cable management contest

Yeah well adapters are usually not good idea, it’s another point of failure. I’ve seen before them melting, even from reputable brands.


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1 minute ago, Whiro said:

Yeah well adapters are usually not good idea, it’s another point of failure. I’ve seen before them melting, even from reputable brands.

i'd be interested to see the power supply that doesn't turn off when shorted.

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Just now, emosun said:

i'd be interested to see the power supply that doesn't turn off when shorted.

Not long time ago there was a guy in here showing his adapter melted, it was Cablemod btw. Don’t remember what psu he had but cable was gone basically 


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Just now, Whiro said:

Don’t remember what psu he had

Soon as we discover this seemingly AT style power supply this guy was using we can warn the op not to use it then.

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2 minutes ago, emosun said:

Soon as we discover this seemingly AT style power supply this guy was using we can warn the op not to use it then.

 


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Adapters melt due to poor contact from the metal pins being an electrical resistance that creates heat the more current is pulled through them, the PSU doesn't detect that as a short; unless a ground pin bridges a live pin due to the melting. Generally, I like minimizing unnecessary connection points though they don't often fail.


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32 minutes ago, Whiro said:

 

and them folding at 100% for 14 hours per day for 35 days straight relates to op because.....

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4 minutes ago, emosun said:

and them folding at 100% for 14 hours per day for 35 days straight relates to op because.....

It doesn’t. That wasn’t the point at all. My point in all of this is that adapter which he’s using is completely unnecessary, but imo it’s another point of failure which can be avoided.


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