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Single or double power cables for hd 5970

Last response: in Graphics & Displays
August 29, 2010 8:01:01 AM

I have a cooler master silent pro gold 1200w psu and a single pcie cable has a 8 pin connector and a 6 pin connector should I just use one cable to power a hd 5970 or would I need to use one cable to power the 6 pin port and another cable to power the 8 pin port On the 5970
a b U Graphics card
August 29, 2010 8:02:06 AM

You need both to power the 5970 as it consumes roughly 300w of power.
August 29, 2010 6:19:22 PM

this is what my power supply cable for my video card looks like.

i was wondering can i use both of these plug from a single cable to power my HD 5970 or would i need seperate cables for the 6 pin and 8 pin

a b U Graphics card
August 29, 2010 6:56:28 PM

Sometimes, different pci-e connectors will be hooked up internally to different 12V rails.
Your PSU seems to have one large 12v rail.
So it would seem that it does not matter and you can use both 6+8 pin connectors stemming off that one cable.
Part of me, wants to wonder if the gauge of the wire can safely pass along all the current that those two connectors are spec'd for. I'm guessing they are.
Other lesser psu's it might not be ok, to make your own splitter and force a 6+8 pin off a single cable.