this post was submitted on 11 Feb 2024
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PC Master Race

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Hello everyone, I'm doing some box cleaning and I found a bunch of cables which I'll ask for your help for identification, if you don't mind 🙃

So, as the title says, how do you call this cable?


Thank you!

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[–] [email protected] 90 points 9 months ago* (last edited 9 months ago) (6 children)

somewhat related PSA: never use old psu cables with a different model psu. As far as I understand it they aren't standardized as to which wires connect which pins, so you risk destroying components if you mix and match cables and psu

[–] [email protected] 27 points 9 months ago (2 children)

This.

I would personally call OP’s cable “house-fire”

[–] [email protected] 2 points 9 months ago

Nah it's fine. Even if he plugs in only one of the 6 pins it's more than capable of the 150w the 8 pin output is rated for. You'd need a really old and shitty PSU for it to actually use different gauge wires for the 6 Vs 8 pin, since the only difference is 2 extra ground wires (and a higher power rating).

[–] [email protected] 1 points 9 months ago

A house fire is unlikely, as you definitely have the PC under supervision on first power-on. The wire insulation can catch fire under certain circumstances but it won't burn your house down if you're quick to act.

[–] [email protected] 17 points 9 months ago* (last edited 9 months ago) (1 children)

No, don't throw them away. You can definitely replace one with another if all the wire colors match and the wires are thick enough and by a reputable brand (so that it's actual copper). But yes, 4-, 6- and 8-pin Molex connectors have at least 2 different possible pinouts, the 24-pin one should be standard.

But if you're naïve and think they're plug-and-play, you'll be playing with a plug-and-fire setup. Most of such swaps will cause a short circuit, in which case fuses or electronic protection will probably trip before the cable insulation starts burning (if the copper is thick enough to sustain 100 A for a second and not heat up by 200 °C). However, pretty much no PC components have polarity protection so you will need to go shopping for an entirely new build.

[–] [email protected] 11 points 9 months ago (1 children)

I'm not one the throw things away, but please don't reuse them if you don't know what your doing.

The PSU end of PSU cables are usually different from brand to brand, sometimes model to model (thanks Corsair), so yeah as long as the pinout matches you should be fine, but I usually wouldn't risk it. Oh the cables are usually all black too, so good luck toneing it out with a multimeter.

For example Corsair vs Seasonic, pay attention to the PSU side:

Corsair Type 4 Pinout

Seasonic Pinout

[–] [email protected] 4 points 9 months ago (1 children)

Yeah, check any documentation available and even check which pins are connected to the same voltage rails. In this case, common sense says that the GPU most likely be fine as long as it uses less than 2/3 the rated power of the cable but any drives will pop.

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[–] [email protected] 8 points 9 months ago (1 children)

I made full custom cables for my last build then the PSU died. RMAed it and got a replacement that was on generation newer.

If I hadn't have learned that cables weren't standardized while making the first batch, I would have fried everything in my PC.

I never wound up remaking/rerouting everything so it just looked like shit for the following 2 years. I probably won't make custom cables again for that reason, though it did look really nice

[–] [email protected] 3 points 9 months ago (1 children)

Its for this reason i use straight-through extensions when builing my PC. Lets me route cables where/how i want. Then they connect to the psu cables somewhere sensible and hidden. Adds to the cost but makes the whole build (so upgrades/replacement) so much more modular.
Just have to make sure you get decent ones and not thin core cheap crap.
I almost did the same as you, and decided to beep out some of tge psu cables as i was waiting for the new PSU to arrive. Immediately bought straight extensions, and havent looked back since!

[–] [email protected] 1 points 9 months ago

I just went with all black this time to skip out on all of it lol

Pretty much everything is hidden so I used to stock cables

[–] [email protected] 7 points 9 months ago (1 children)

Wow, never new about this, rather important to know about this actually.

[–] [email protected] 4 points 9 months ago (1 children)

I've absolutely fried a brand new HDD in my server because of this. I thought it was a cable for that PSU, but it was a different brand.

[–] [email protected] 1 points 9 months ago* (last edited 9 months ago)

Most likely, the motor and head circuitry survived. The burnt PCB can probably be cheaply replaced without cracking open the sealed internals of the drive mechanism, and the drive should work as normal after a test and calibration. Of course, wrong polarity will destroy SSDs and most other PC parts beyond the point of repair.

[–] [email protected] 5 points 9 months ago (1 children)

It’s always safer to just leave random mystery cables alone.

However, if you have a multimeter and some patience, they can still be used safely. You just need to know what you’re doing, look up the pinout and measure the voltages before plugging anything into any sensitive components.

[–] [email protected] 2 points 9 months ago

Not planning to plug anything :D Just want to get rid of some stuff and I need to somehow label it. Thanks for the info though!

[–] [email protected] 2 points 9 months ago

That sucks. Glad I saw your comment. Hope I remember when it matters.

[–] [email protected] 42 points 9 months ago (1 children)

It's a power adapter cable for inside a PC. It's an 8 pin to dual 6 pin PCI power adapter. You probably don't need it, it likely came with a PSU and wasn't needed for the build.

[–] [email protected] 2 points 9 months ago

I definitely don't need it, just want to label it somehow, thanks for the info!

[–] [email protected] 35 points 9 months ago* (last edited 9 months ago) (2 children)
[–] [email protected] 4 points 9 months ago (1 children)

That's a very catchy name :) Just rolls of the tongue

[–] [email protected] 3 points 9 months ago

You can call it Greg.

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[–] [email protected] 19 points 9 months ago* (last edited 9 months ago) (1 children)

Dual 6 pin to 8 pin adaptor.

Generally used for high end video cards.

[–] [email protected] 13 points 9 months ago (1 children)

Older higher end video cards. Back in the day when a single 8 pin pcie cable wasn’t a given on your PSU so manufacturers just shipped that adapter.

Now we have the abomination that’s the 4x 8 pin to 12vhpwr and takes up 10 feet of space.

[–] [email protected] 11 points 9 months ago (1 children)
[–] [email protected] 8 points 9 months ago (1 children)
[–] [email protected] 4 points 9 months ago
[–] [email protected] 16 points 9 months ago (1 children)

I think I'd go with something like Tedly or Lawrence.

[–] [email protected] 4 points 9 months ago

I was thinking Emilio.

[–] [email protected] 11 points 9 months ago (2 children)
[–] [email protected] 4 points 9 months ago (1 children)
[–] [email protected] 4 points 9 months ago (1 children)
[–] [email protected] 4 points 9 months ago

He he he he

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[–] [email protected] 9 points 9 months ago (2 children)

Dunno what they are actually called (and I refuse to look it up) but I always called those 6 pin and 8 pin power connectors and people seem to know what I mean.

[–] [email protected] 3 points 9 months ago

That is how I always called them as well, so we're good :D

[–] [email protected] 2 points 9 months ago (1 children)

Except there are several types with different pinouts, and you can destroy components with reverse polarity.

[–] [email protected] 6 points 9 months ago (2 children)

Hasn't really been an issue in the last 20 years for me and now those are really only used for the CPU power and AMD GPUs. Also aren't those curved pin cover things there specifically so you couldn't plug it into the wrong thing?

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[–] [email protected] 8 points 9 months ago (1 children)

It's an adapter for the power to a graphics card.

Most modern cards need the combined power of the two input cables, while many power supply units for compatibility's sake still only offer the two small cables and not a single big one.

So this adapter now usually comes with every graphics card you buy, and sometimes PSUs too, and they end up lying around.

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[–] [email protected] 7 points 9 months ago

Chuck for sure. Then you don't have to worry about a name.

[–] [email protected] 5 points 9 months ago (1 children)
[–] [email protected] 3 points 9 months ago
[–] [email protected] 5 points 9 months ago* (last edited 9 months ago) (2 children)

You don't need it; just toss/donate/recycle it.

Any adapter you might need for a new GPU in the future will already be in the box.

[–] [email protected] 1 points 9 months ago

No way! I just used one today with my second-hand GPU! Now I just have to figure out why it won't boot...

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[–] [email protected] 4 points 9 months ago (1 children)

Do I need to place the picture either in the title or in the post? Sorry, I'm noob here lmao

[–] [email protected] 4 points 9 months ago (1 children)

The way you posted it was fine

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[–] [email protected] 4 points 9 months ago (1 children)

It looks like a power connector used inside of an PC. I think they're called (number)+ pin power connector. Have a look at this

[–] [email protected] 1 points 9 months ago
[–] [email protected] 3 points 9 months ago (1 children)
[–] [email protected] 2 points 9 months ago (1 children)
[–] [email protected] 2 points 9 months ago

I used to call it Pepe

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