Flipping PSU cable around possible?

gravemansam

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Nov 13, 2013
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tl;dr Can you possibly flip a PSU cable around and plug the 6+2 PCI-E end into the PSU and the 8 pin into the GPU?

I have an EVGA 1300W G2 PSU and want to sleeve the cables. However, there is a capacitor on the end of the cable towards the 6+2 pin end and it is only covered by a large amount of heat shrink. Obviously this will not look good to try and hide the capacitor. I also want to cut the length of the wires down. I emailed EVGA and asked how important the capacitor is to the PSU and they said theoretically it should be fine, but the regulatory power of the PSU would be hindered, but they are not sure if it would actually mess anything up. So my first solution would be to flip the cable around so I can hide the capacitor next to the PSU where it won't be seen in the base of my corsair 900D and I can sleeve everything so that just nice sleeved wires are being shown. The second option is to just cut the wire before the capacitor the 6+2 pin end and run the cables into an 8 pin, which I got the same response from EVGA that it could work, but it may or may not cause issues.

What is your guys thoughts or do you have any other solutions? Thanks
 
Solution


It will not cause harm in the way you're thinking, no.

It might, however, slightly shorten the life of the graphics card. However, I'm betting that it'll still be obsolete by the time it's affected by that, so I wouldn't worry about it too much.
They should be key'd differently to prevent you from flipping them around. You will need to make sure it is a straight through cable and doesn't have any crossovers if you do make modifications.

The purpose of the capacitor would be to reduce noise on the 12V line, since using 2 6+2 pin connectors means you could be pulling up to 300W(25A) down the wire they put some extra filtering closer to the source to help smooth things out a bit.
 


So if I make sure they are all straight through it should be fine to flip them around or if they are not I just need to adjust so they go to the correct locations?

Do the capacitors really play that essential of a role in smoothing everything out? I will likely be drawing a large amount of current as I am running 2 AMD R9 295x2 and don't want to risk ruining them. The power consumption for my total PC is split over 2 EVGA 1300W G2 PSU. Thanks
 


No, what he's saying is that they're physically differently keyed connectors. Look at one face on - some pins are square, some are rounded. That's to prevent you from accidentally plugging, say, a PowerPC PCI cable into your EVGA unit and causing havoc. It also means you can't just turn it around.

Yes, the capacitors would play an essential role, since you're drawing such a large amount of current.

Why wouldn't you just do the easy option and shorten the cable from the PSU end?
 


The capacitor just ruins the look. I know it would be easy to shorten the 8 pin side, but my real issue is the capaacitor getting in the way of sleeving.. It is roughly 1 inch from the plug in to the GPU and just looks bad. I really just want to get the capacitor out of the view somehow. Any ideas?
 


Well... at the sacrifice of a little bit of its utility, you could splice a few inches in between it and the plug, but that means you would have to do two splices...

Or you could take it off and live with knowing your graphics cards are getting slightly dirtier power.
 


I don't care about the dirty power unless it will actually cause any harm. I've looked all over forums and from what I have seen there have been no repercussions so far from people who have removed capacitors from their cables. Just trying to get as close to a solid answer as I can. Thanks for the input.
 


It will not cause harm in the way you're thinking, no.

It might, however, slightly shorten the life of the graphics card. However, I'm betting that it'll still be obsolete by the time it's affected by that, so I wouldn't worry about it too much.
 
Solution