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Simple question (I think)

Mr.Lahey
By Mr.Lahey
in Power Supplies
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Go to solution Solved by Enderman,

A single cable will be enough, but if you want to do some extreme overclocking or a more power hungry card then you should use two cables for safety.

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I have a Corsair RM750 power supply, and a Sapphire r9 280x.  My power supply included pci-e cables that terminate into 2 8-pin connectors.  Can I use just this one cable for both my 8-pin inputs on the GPU, or should I run another cable for better power delivery?  Thanks.

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you mean use 1 cable from the PSU to 2x 9pin headers ? yep you can do that

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I have a Corsair RM750 power supply, and a Sapphire r9 280x.  My power supply included pci-e cables that terminate into 2 8-pin connectors.  Can I use just this one cable for both my 8-pin inputs on the GPU, or should I run another cable for better power delivery?  Thanks.

Yes.You can use the single cable to power up the GPU.

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Posted
  • Solution

A single cable will be enough, but if you want to do some extreme overclocking or a more power hungry card then you should use two cables for safety.

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A single cable will be enough, but if you want to do some extreme overclocking or a more power hungry card then you should use two cables for safety.

It doesn't make a difference. The rm750 uses a single 12v rail.

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It doesn't make a difference. The rm750 uses a single 12v rail.

I mean for the cables, so they you dont draw 400W through a single cable since that can be a fire hazard.

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I mean for the cables, so they you dont draw 400W through a single cable since that can be a fire hazard.

It doesn't really matter. The 280x doesn't pull nearly that much power.

Higher quality (or non-crap) psus also don't low-ball to just to cover the official pcie cable specifications which is why you don't see systems with 295x2's exploding. 

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It doesn't really matter. The 280x doesn't pull nearly that much power.

Higher quality (or non-crap) psus also don't low-ball to just to cover the official pcie cable specifications which is why you don't see systems with 295x2's exploding. 

well psu wires are quite thin actually... usually 16 or 18awg which is way too thin imo

if you overclock a lot or use a very power hungry card, the cables could possibly become a power bottleneck

 

i would like to see PSUs using 14-12awg

its what rc cars with over 50 amp ESCs use...

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