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5970 power cable??

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  • Radeon
  • Power Supplies
  • Cable
  • Power
  • Graphics
  • Product
Last response: in Graphics & Displays
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October 18, 2010 3:55:15 AM

Hi guys,

I was about to install a second 5970 in my system, but realized that my 4 gig 5970 uses up both 8 pin connectors..
do i need to get a new power supply to be able to pop in my 2 gig 5970?

the 2 gig version only needs one 8 pin and 1 6 pin..

my power supply is a 1200 watt and has the power cables that can get unattached.
is this something I can buy at a pc store? like microcenter?

Id hate to think I need another powersupply.

Not sure what happened to the cable though..

any ideas?

thank you
Phil

More about : 5970 power cable

a c 165 ) Power supply
October 18, 2010 4:31:36 AM

run one 6+2 to each 5970. use adapters (the 5970 should come with some) for the second power connector to each card if you lack any more, although you should have at least 4 on a 1200w.

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a b ) Power supply
October 18, 2010 7:30:57 AM

Your 1200W power supply is sufficient enough. if of course it's a proper brand with the right power ratings. :) 
Your PSU should have the sufficient connectors on it , I guess if it's not too old.
If it doesn't then you need to get a power adapter from any of the online shops or your dealer that will comply with the power requirement of the 5970 and provided that you have the other power cable free from your PSU for it to comply with.
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a c 144 ) Power supply
October 18, 2010 5:48:47 PM

You do not need the power adapters. Just use one 8 pin (6+2) and one 6 pin each.

I do not know where the original specs for the PCIe power cables came from, but look at the 6 and 8 pin connectors. The 6 pin has 3 hot (yellow) wires and 3 ground (black) wires. The 8 pin has 3 hot and 5 ground wires. So each will carry the same amount of current through the 3 hot wires.
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October 20, 2010 4:12:48 AM

I'm still curious as what make/model PS he's running???
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a b ) Power supply
October 20, 2010 7:31:22 AM

I think this is the machine he's using
Alienware Area-51 ALX (Intel Core i7 950 1200GB/6GB)
I don't really have an idea as to what Alienware uses for their PSU's.
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