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Old 08-16-2007
TurboCostco TurboCostco is offline
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Default Differences in 8 pin pci-e

Hi, i was looking at some pictures of pci-e 8 pin connectors, and realized that some, including the picture for the new 550w corsair comming out soon, have basically a 6 pin, then with an extra 2 that is directly connected to the black wires at the connector. Whereas other power supplies, (i think in the antec 850w), have the 2 extra black wires running all the way back to the power supply. Would this make a difference? it seems like the first case is a halfass revision, but I have no clue on real world application. Thanks for ur time.
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Old 08-16-2007
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One of the two black wires is for "sense". I don't know if that is going to be some kind of TTL thing (???) where a signal status of some kind exists or what, but naturally, wires running to the system is more desirable IMHO. For now either should work.

Perhaps something is set to change in supplies in the future and that is what "sense" is about?
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Old 08-16-2007
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One of the two wires is SUPPOSED TO BE sense. But nobody is using that yet.

+12V sense tells the PWM in the PSU that +12V is dropping and regulation can be increased to compensate.
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Old 08-16-2007
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AH! I SEE!

http://en.wikipedia.org/wiki/Pulse-width_modulation
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