advice re PCIe 6pin cables

Feb 21, 2018
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Hi all - rehoused my PC interiors into case I was given by a friend. It has a Be Quiet Dark Power Pro BQT P7-Pro-650W PSU but the guy gave it to me lost the PCI-e cables it came with as he did not need them. Unfortunately my Windforce 750 Ti does need a 6pin power... I have looked at various websites but cant make up what cable I need to get - there are various 6 pin to molex or sata that I assume just draw the power designed for HDs. there are 8 pin to 6 pin cables but they are generally marketed as for 8pin cards and more confusing is that the manual I found online suggest that the connector on the PSU is a 6pin connector housed in an 8 pin socket...
any ideas for what I should get?
 
Solution
the connections are standard but what is going on inside the psu is not. so simply matching up how it connects to the psu does not guarantee the wires are lining up right and a number of other possible things that could be different.

there is no standard for how the wires are laid out. perhaps if you had a schematic of the psu and could verify that all the wires coming out of the psu are going to the right place and are rated for the right wattage and so on. then you may reasonably feel safe going with a set that does not come from that psu. but you do need to know how to verify and then actually verify that everything lines up the way it's supposed to.

ebay may be a good place to look as well. maybe someone has the cables from a...

Math Geek

Titan
Ambassador
you should get a cable set for it to work the best. not just any set will do, it has to be one designed for your psu.

an adapter that combines 2 molex or sata connections into a single 6-pin would be the last second option to consider. the psu can handle the power draw easily as it is a quality unit. but trying to make more than a 6-pin with those adapters is pretty much never a good idea.

a replacement set of cables is what you really should be looking for. either be quiet sells them or some custom makers probably make a set for that psu.
 

Sedivy

Estimable
I would actually get cables straight from the manufacturer of the psu like math geek said. While other cables are probably ok as well, it's always recommended to use manufacturer cables. Sometimes if you have issues with the cables or you lose them, manufacturer will provide replacement so might be worth contacting bequiet and explaining. If they don't send you cables, they'll at least give you a link on which ones are safe to use with their psu.
 
Feb 21, 2018
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Thank you for the advice - what about a generic 8pin to 6pin cables? its an old model and by the time I will find replacement arts and they send me from germany will be to late for what i need (i have some work I need to finish on after effects) . I looked at the schematic in the manual - strangely it shows only 6 pin connector (it's 8pin socket on the PSU) three +12v and three Coms - i just wonder if this a PCIe standard wiring...
 

Math Geek

Titan
Ambassador
the connections are standard but what is going on inside the psu is not. so simply matching up how it connects to the psu does not guarantee the wires are lining up right and a number of other possible things that could be different.

there is no standard for how the wires are laid out. perhaps if you had a schematic of the psu and could verify that all the wires coming out of the psu are going to the right place and are rated for the right wattage and so on. then you may reasonably feel safe going with a set that does not come from that psu. but you do need to know how to verify and then actually verify that everything lines up the way it's supposed to.

ebay may be a good place to look as well. maybe someone has the cables from a dead psu they are trying to sell.

a molex/sata to 6-pin adapter may be a good temp solution for you until you can track down the right cables. again though get one that combines 2 molex or sata into a single 6-pin. a single one of either won't give the 75w a 6-pin needs to be able to provide.
 
Solution