Question 8 pin adapter will not fit 8 pin slot on motherboard.

Feb 13, 2020
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Ralston18

Titan
Moderator
Update your post to include full system hardware specs and OS.

Especially Motherboard and PSU.

Are you mixing and matching cables from various PSU's?

Those connections are very specific and if an adapter makes the connections physically fit, that adapter may not necessarily establish the necessary matches to polarity and voltage.

That will not end well.

More information needed.
 
Feb 13, 2020
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I bought it at Canada computers, they have a store near me.

Updated specs
Motherboard: gigabyte ga-78lmt-ubs3 6.0
Power supply: Evega 650 BQ
Processor: and FX 6300
Graphics card: Currently using a and r7 360 series, upgrading to a amd Radeon Rx 580 which requires a larger power supply.
Ram: 16gb
OS: Windows 10

I am not mixing and matching any cables, only using new ones that came with the psu, aside from the adapter I bought.

-thanks
 

bignastyid

Titan
Moderator
The connector on the left is 8-pin PCI-e and is mainly for GPU's not the motherboards eps connection(pic on the right). Look for the 8 pin(4+4) connector coming from the PSU as this is what you plug into the motherboard. Your PSU comes with one so there is no adapter needed. It will be one of the 3 wired(non modular) cables.
 
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DSzymborski

Champion
Moderator
It's a good thing that you couldn't fit a 6 pin PCIE cable into an 8 pin CPU slot with an adapter. If you had been successful, there's a very high chance you would no longer have a power supply, a motherboard, and/or a CPU.

As bignasty notes, you're looking for a 4+4 pin connector and no adapter will be needed. I'd take this opportunity to take a step back and learn what all the connectors are for, what they do, and where they go, before some very expensive consequences of not doing so.
 

bryanc723

Honorable
Jan 1, 2015
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I'm not seeing why the 650w ps won't handle the new GPU here. Unless it just doesn't have the physical cables. I'm running an r9 fury and fx 8350 with a 760w supply.
 
Feb 13, 2020
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It's a good thing that you couldn't fit a 6 pin PCIE cable into an 8 pin CPU slot with an adapter. If you had been successful, there's a very high chance you would no longer have a power supply, a motherboard, and/or a CPU.
Ir does fit I and considered trying it, but something told me not to, it didn't seem right. I googled If that would work and I'm glad I didn't try it.
 

stonecarver

Upstanding
Nov 18, 2019
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Just so you have an idea as to why it's so bad to mix plugging in wrong 8 pin

Motherboards 8 pin is 4x 12v one row 4x negitive other row

PCI-X 8 pin is 3x12v and 5x negitive...............................one on the negative is lined up with the 12v positive
 
Feb 13, 2020
4
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10
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The connector on the left is 8-pin PCI-e and is mainly for GPU's not the motherboards eps connection(pic on the right). Look for the 8 pin(4+4) connector coming from the PSU as this is what you plug into the motherboard. Your PSU comes with one so there is no adapter needed. It will be one of the 3 wired(non modular) cables.
That did the trick, thanks man!
 

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