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Started by Dus | | 9 answers
I was replacing my old PSU with a new Seasonic when I noticed that the manual recommended using the specially marked PCI/E power cables for the GPU.
I'm done installing it and everything works perfectly, but I noticed that my old PSU (which was installed by a custom PC dealer) had instead used 4pin peripheral power cables forked into two 6pin adapters connected to the GPU and these pins weren't specifically marked PCI/E.
Can someone explain the difference between using these adapters v/s an explicitly PCI/E cable? My old setup worked without issues for over 3 years so I'm assuming the dealer's technicians knew what they were doing when they setup the PSU in the older rig.
Thanks in advance!
I'm done installing it and everything works perfectly, but I noticed that my old PSU (which was installed by a custom PC dealer) had instead used 4pin peripheral power cables forked into two 6pin adapters connected to the GPU and these pins weren't specifically marked PCI/E.
Can someone explain the difference between using these adapters v/s an explicitly PCI/E cable? My old setup worked without issues for over 3 years so I'm assuming the dealer's technicians knew what they were doing when they setup the PSU in the older rig.
Thanks in advance!
junkeymonkey
October 14, 2014 5:41:49 AM
Dus
October 14, 2014 4:29:11 AM
junkeymonkey
October 13, 2014 1:04:41 PM
they've included these cables for the sake of PSUs that don't have an explicit PCIE cable?
yes and as stated above theres no guarantee the adaptor thing like molex to pci-e will supply the correct power as needed as will using the correct pci-e leads from the psu that's just meant for the cards
use the correct leads from the psu to the card
yes and as stated above theres no guarantee the adaptor thing like molex to pci-e will supply the correct power as needed as will using the correct pci-e leads from the psu that's just meant for the cards
use the correct leads from the psu to the card
junkeymonkey
October 13, 2014 1:00:02 PM
Dus
October 13, 2014 12:32:03 PM
I'm afraid I have one more doubt on this topic.
I just got a new Zotac GTX card (970) and for some reason they've included the same 4 pin->6pin cables in the box that my dealer had used to connect my old card as described in the OP! That explains my previous setup - the dealer had simply wired up whatever they found out of the box. The Zotac manual offers only generic suggestions on the subject of power cables and there's no mention of PCIE cables at all.
Is it possible that they've included these cables for the sake of PSUs that don't have an explicit PCIE cable? I'm tempted to just plug the Seasonic PCIE cables into the 2 6pin slots on the GPU but I'd like to know what you folks think about this first!
I just got a new Zotac GTX card (970) and for some reason they've included the same 4 pin->6pin cables in the box that my dealer had used to connect my old card as described in the OP! That explains my previous setup - the dealer had simply wired up whatever they found out of the box. The Zotac manual offers only generic suggestions on the subject of power cables and there's no mention of PCIE cables at all.
Is it possible that they've included these cables for the sake of PSUs that don't have an explicit PCIE cable? I'm tempted to just plug the Seasonic PCIE cables into the 2 6pin slots on the GPU but I'd like to know what you folks think about this first!
Dus
October 11, 2014 8:02:15 AM
Thanks both of you, I get it now.
My UPS tells me that after installing the new PSU my power consumption has come down by almost 50 watts at peak usage. I'm chalking this down to the Seasonic S12 bronze being more efficient than my old PSU, although I"m not sure if the act of using wrong cables was also adding to any inefficiency.
My UPS tells me that after installing the new PSU my power consumption has come down by almost 50 watts at peak usage. I'm chalking this down to the Seasonic S12 bronze being more efficient than my old PSU, although I"m not sure if the act of using wrong cables was also adding to any inefficiency.
Best solution chosen by Dus
junkeymonkey
October 11, 2014 7:32:05 AM
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