6 pin power cable 8 pin motherboard

Posted on 2014-03-14
Last Modified: 2016-05-13
Hi, I have just purchased a new MB and CPU.
My power supply only has the usual ATX power and a 6 pin cable for the CPU.
It's an 8 core AMD and an asrock 980 MB.

any advice would be appreciated
Question by:fhandley
LVL 34

Accepted Solution

Dan Craciun earned 125 total points
ID: 39928610
You're sure the 6 pin cable is for the CPU? Cause on all PSU's I've seen, the CPU cable has 4 or 8 pins.

Those with 6 pins are for video cards.

LVL 15

Expert Comment

ID: 39928612
Please take a look at this page. I think it can be useful:

Hope it helps. Regards.
LVL 34

Expert Comment

by:Dan Craciun
ID: 39928615
You need an adapter, such as this:

Or a new PSU.

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

LVL 92

Assisted Solution

nobus earned 250 total points
ID: 39928633
just to be sure - post a picture of the connector
but i agree with Dan  - 4 or 8 it is

here it says you need an 8-pin connector (use the picture in full front) :

so you probably need an adapter - if you PS can handle the load
post the model, and calculate the power needed here :      

adapter :
for sata connectors :

Molex :

Author Comment

ID: 39928727
So I've tried with just the 4 pin connector which most blogs agree wont create any smoke.

I'm getting no post beeps or display on my monitor, I'll head down to the shop an get a molex adapter tomorrow and see how I go.
LVL 70

Assisted Solution

garycase earned 125 total points
ID: 39928831
Is your primary ATX power connection from the power supply the 24-pin connection this motherboard requires?    You need to have BOTH that AND the 8-pin EPS connector or you won't be providing the required power for the board.

Also, be sure your video card doesn't require an auxiliary PCIe power connection (THAT is what your 6-pin connector is) ... and if it does, connect it as well.

If you elect to use an adapter to provide the 8-pin EPS power, be sure it's combining two different PSU outputs ... some of these simply split the 4-pin output into 8-pins -- and this does NOT increase the available power on that line from the power supply (and likely won't work).    Personally, I'd buy a power supply with an 8-pin EPS power output.
LVL 92

Assisted Solution

nobus earned 250 total points
ID: 39928918
>>  So I've tried with just the 4 pin connector which most blogs agree wont create any smoke  <<  not directly no - but you may see something charring, or burning in a few months time.
Do it properly - buy the adapters you need, or buy a PS with the proper outputs

Featured Post

ScreenConnect 6.0 Free Trial

Discover new time-saving features in one game-changing release, ScreenConnect 6.0, based on partner feedback. New features include a redesigned UI, app configurations and chat acknowledgement to improve customer engagement!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Basic computer tune-up with little or no hardware upgrades. Giving an old computer a tune-up usually results in a minimal performance gain, but a gain nonetheless. Several times a week, I’m faced with users at work who ask to make their computers…
Skype is a P2P (Peer to Peer) instant messaging and VOIP (Voice over IP) service – as well as a whole lot more.
The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…
The viewer will learn how to successfully download and install the SARDU utility on Windows 7, without downloading adware.

773 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question