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Simple graphics card cable question. Two 6pin-6pin cables or one 6pin-2x6pin splitter?

Last response: in Graphics & Displays
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July 9, 2014 9:24:31 PM

I had a radeon 7850 gpu and recently bought an xfx double d r9 270x. I went to switch out the cards and realized that the 270x requires two 6-pin power cables. The 7850 only required one. I have a cooler master 850w fully modulated power supply so there is no problem with having an extra pcie slot but this brings me to my question: what is the best way to power the gpu, cable wise. I am powering my 7850 with a single 6+2 pin to 6 pin cable. Should I just get another 6pin-6pin cable or a 6pin-2x6pin splitter? Is one of these ways more optimal than the other? An answer would be greatly appreciated as I am waiting to buy the cable until I am sure of what I want to use. Thanks in advance!
a b U Graphics card
July 9, 2014 9:28:37 PM

I would get a 6pin-6pin cable just to be safe. 2x6pin is usable though so go with it if you want.
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a c 188 U Graphics card
July 9, 2014 9:30:10 PM

All modern power supplies have 6+2 pin power suppply connectors that can plug into graphics card 6 pin or 8 pin connectors.

The XFX R9 270x has 2 x 6 pin connections, so just use the 6 pin part of 2 power supply 6+2 pin connectors.
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July 9, 2014 9:37:14 PM

i7Baby said:
All modern power supplies have 6+2 pin power suppply connectors that can plug into graphics card 6 pin or 8 pin connectors.

The XFX R9 270x has 2 x 6 pin connections, so just use the 6 pin part of 2 power supply 6+2 pin connectors.


I am currently using one 6 pin - 6+2 pin connector. That is the only one my psu you came with, or I have misplaced the others seeing as it has been 2 years since I built it. The real question I have is whether to buy another 6 pin - 6 pin cable and have 2 cables running from my psu to my gpu or to just replace my current cable with a 6pin - 6x2 pin splitter.
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a c 188 U Graphics card
July 9, 2014 11:02:03 PM

You need 2 x 6pin connectors from the psu. You need to find the other modular leads or buy more or buy another power supply.

What model power supply you got?
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July 9, 2014 11:13:06 PM

i7Baby said:
You need 2 x 6pin connectors from the psu. You need to find the other modular leads or buy more or buy another power supply.

What model power supply you got?


cooler master silent pro hybrid 850w 80+ gold

I was thinking of just getting a splitter so I wouldn't have as many cables. But apparently that can create problems and it is just safer to use two 6pin to 6pin cables?
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a c 188 U Graphics card
July 9, 2014 11:29:39 PM

The spec says it should have 6 x 6+2 pin connectors. If all you've got is one, there must be a big bunch of them around somewhere. Pr is it 3 cables each with two connectors?
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July 9, 2014 11:39:19 PM

i7Baby said:
The spec says it should have 6 x 6+2 pin connectors. If all you've got is one, there must be a big bunch of them around somewhere. Pr is it 3 cables each with two connectors?


My lack of connectors isn't the problem as I am willing and able to buy as many as I need. The question I really need answered is whether I should use a single cable with a splitter or 2 separate cables in order to power my gpu.
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a b U Graphics card
July 9, 2014 11:48:58 PM

I had to come up with a 2nd 6pin when I got my gtx670, I had 2 unused 4pin molex that I turned into the 2nd 6pin. I remember seeing adapters that could turn 1 4pin molex into a 6pin but I went with the 2 4pin molex to a single 6pin and was fine for years, it still works but I had to get a new PSU when I got my 780ti.

I remember using those 4 pin molex adapters to power hard drives and dvd-roms on my previous computer but nothing that came with my new computer used them yet my PSU still had them just in case anyone wanted to hook up older drives. Hopefully you have 2 unused 4pin molex cables like I did as it works flawlessly.
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a c 188 U Graphics card
July 9, 2014 11:53:47 PM

You need 2 6 pin connectors coming straight from the psu. Do it without splitters.
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July 9, 2014 11:56:22 PM

i7Baby said:
You need 2 6 pin connectors coming straight from the psu. Do it without splitters.


Thanks! That's all I needed to know.
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