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My PSU came with 2 cpu 8 pin cables?

SomeGuyNamedSean
Go to solution Solved by mariushm,

It's perfectly normal for a power supply to come with 2 CPU 8 pin

Sometimes one of the cables can be split in 2  CPU 4 pin connectors, maybe that's why it says in smaller letters on one cable.

 

This makes it possible to power a motherboard that has only one 4 pin CPU connector, or motherboards with one 8 pin and one 4 pin connector.

 

Only ONE 8 pin is needed, if your motherboard has more than one 8 pin.  Anything else is optional, and only needed if you have very power hungry processors (think 12 or 16 core processors).

If you don't like the extra cables, then your computer will be perfectly fine with just the 8 pin connector populated.

 

A single 8 pin connector can give the processor over 300 watts. The 5600x will not consume more than 100-125 watts.  Extra power connectors are not needed when the first cable is barely used to half of its capabilities.

So do I need to use both cables or just 1?

 

I'm also a bit comfused because the text written on it diffrent for the other one

One cable has 2 times small cpu on it 

The second cable has writting CPU big on it?

 

:/

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A lot of motherboards nowadays have multiple CPU power connectors. Often an 8 pin and 4 pin.

Usually the 8 pin is only needed.

 

One cable probably has CPU written on it twice, because it can split into two 4 pin cables.

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards workhttps://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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Just now, minibois said:

A lot of motherboards nowadays have multiple CPU power connectors. Often an 8 pin and 4 pin.

Usually the 8 pin is only needed.

 

One cable probably has CPU written on it twice, because it can split into two 4 pin cables.

So should I connect both or just 1 the 8 pin?

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Just now, SomeGuyNamedSean said:

So should I connect both or just 1 the 8 pin?

What motherboard and CPU are you using?

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards workhttps://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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Just now, minibois said:

What motherboard and CPU are you using?

X570 MPG Gaming Edge WIFI 

AMD 5600X

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It's perfectly normal for a power supply to come with 2 CPU 8 pin

Sometimes one of the cables can be split in 2  CPU 4 pin connectors, maybe that's why it says in smaller letters on one cable.

 

This makes it possible to power a motherboard that has only one 4 pin CPU connector, or motherboards with one 8 pin and one 4 pin connector.

 

Only ONE 8 pin is needed, if your motherboard has more than one 8 pin.  Anything else is optional, and only needed if you have very power hungry processors (think 12 or 16 core processors).

If you don't like the extra cables, then your computer will be perfectly fine with just the 8 pin connector populated.

 

A single 8 pin connector can give the processor over 300 watts. The 5600x will not consume more than 100-125 watts.  Extra power connectors are not needed when the first cable is barely used to half of its capabilities.

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Just now, SomeGuyNamedSean said:

X570 MPG Gaming Edge WIFI 

AMD 5600X

You'd only need the 8 pin cable.

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards workhttps://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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7 minutes ago, minibois said:

You'd only need the 8 pin cable.

need, yea, but since you have both why not use both?

I could use some help with this!

please, pm me if you would like to contribute to my gpu bios database (includes overclocking bios, stock bios, and upgrades to gpus via modding)

Bios database

My beautiful, but not that powerful, main PC:

prior build:

Spoiler

 

 

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1 minute ago, HelpfulTechWizard said:

need, yea, but since you have both why not use both?

I think it it is useless to use both if it not even take half the cpu power a cable can handle. because the guy a few post back said it only takes about 125 watt and a cable can transfer 300 watt I just saw.

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1 minute ago, SomeGuyNamedSean said:

I think it it is useless to use both if it not even take half the cpu power a cable can handle. because the guy a few post back said it only takes about 125 watt and a cable can transfer 300 watt I just saw.

yeah. Just, for me, I don't like how empty power headers look. which is the whole reason i suggested using both. 

I could use some help with this!

please, pm me if you would like to contribute to my gpu bios database (includes overclocking bios, stock bios, and upgrades to gpus via modding)

Bios database

My beautiful, but not that powerful, main PC:

prior build:

Spoiler

 

 

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4 minutes ago, HelpfulTechWizard said:

need, yea, but since you have both why not use both?

Well go right ahead and suggest that to OP and not ask me.

Why use a cable you don't need? It will only get in the way.

 

Of course the counter-argument would be that having it installed ensures if you're going to install a more power hungry CPU in the future you don't have to run another cable I suppose.

"We're all in this together, might as well be friends" Tom, Toonami.

 

mini eLiXiVy: my open source 65% mechanical PCB, a build log, PCB anatomy and discussing open source licenses: https://linustechtips.com/topic/1366493-elixivy-a-65-mechanical-keyboard-build-log-pcb-anatomy-and-how-i-open-sourced-this-project/

 

mini_cardboard: a 4% keyboard build log and how keyboards workhttps://linustechtips.com/topic/1328547-mini_cardboard-a-4-keyboard-build-log-and-how-keyboards-work/

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