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PSU cable question - Page 2

post #11 of 17
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Quote:
Originally Posted by rossb View Post

If you couldn't use both connectors on the same cable, what would be the point of having the second connector?

yea that's what I've been saying.

anyway I built it using one cable and everything seems to be okay.
post #12 of 17
Quote:
Originally Posted by siggie30 View Post

Because not all GPU connectors are 8 pin. Savy?

Mmm, not really. My PSU has a single cable with 2 x 6+2 pcie connectors. A single one of these connectors would work with any 6 pin or 8 pin GPU socket. What then is the point of the second 6+2 pin plug if it cannot be used?
post #13 of 17
Quote:
Originally Posted by rossb View Post

Mmm, not really. My PSU has a single cable with 2 x 6+2 pcie connectors. A single one of these connectors would work with any 6 pin or 8 pin GPU socket. What then is the point of the second 6+2 pin plug if it cannot be used?

Let's not beat around the bush. All what Siggie posted in this thread is wrong. Even with average quality wires, the 6-pin PCIe can handle over 500W before melting. So at less than half that current a 8+6 split or even a 8+8 split is fine.
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post #14 of 17
Quote:
Originally Posted by WiSK View Post

Quote:
Originally Posted by rossb View Post

Mmm, not really. My PSU has a single cable with 2 x 6+2 pcie connectors. A single one of these connectors would work with any 6 pin or 8 pin GPU socket. What then is the point of the second 6+2 pin plug if it cannot be used?

Let's not beat around the bush. All what Siggie posted in this thread is wrong. Even with average quality wires, the 6-pin PCIe can handle over 500W before melting. So at less than half that current a 8+6 split or even a 8+8 split is fine.

Really?

EDIT: That question was meant sarcastically. Also, Rossb, we were not discussing 6+2, we were discussing 8 + 6. The spec'ed PSU does have 16 Ga cabling for the GPU, so the reference to current would be correct, however, the same methodology cannot be applied to all GPU's to all PSU's and there associative cabling. The OP has allready stated that he is using one cable with both leads to the 7970, and it is working fine. No need to arbitrarily argue over a moot point. At Wisk, if you want to counter my statement, provide info, not some ridiculous situation. Done.
Edited by siggie30 - 12/5/12 at 7:22pm
    
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post #15 of 17
Thanks for clarifying, but now I'm a little concerned, since I'm about to use both 6+2 plugs from a single cable into my GTX 690. Should I be worried?
post #16 of 17
Quote:
Originally Posted by siggie30 View Post

At Wisk, if you want to counter my statement, provide info, not some ridiculous situation. Done.

I did: http://www.overclock.net/t/1332978/psu-cable-question#post_18759420

You can also google yourself for 18 AWG and see that its ampacity is rated at 14A which in itself is a very conservative downscaling for safety reasons because the NESC presumes you'll be bundling a large numbers of wires in a high ambient temperature environment with thick low temperature insulation. Bare 18AWG copper wire with ideal cooling could in fact reach 80 amperes before fusing.
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post #17 of 17
I am glad we are discussing the wire in the loom, and not considering the GPU PCB trace widths.
Edited by siggie30 - 12/6/12 at 1:16pm
    
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