One PCI-E 2x 8 pin to power two 4x 6 pin card?

nc50lc

legendary

Activity: 2534

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Self-proclaimed Genius

Yes you can, just take note of the wire's color.
yellow: 12v
Black: neutral
It basically reroute the wires of the two six pins into the 8pin connector.

OhMyHolyToken

jr. member

Activity: 98

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Can I power a R9 280 with one 8 pin from PCI-E and one 6 pin from two molex to 6 pin PCI-e adapter?

Thanks

P00P135

full member

Activity: 1124

Merit: 136

Quote from: OhMyHolyToken on December 20, 2017, 02:23:44 AM

Quote from: szafa on December 20, 2017, 01:07:54 AM

What psu you have?

Corsair 1000W and 750W.

I tried to use 8 pin CPU to two 6+2 PCI-E adapter from ebay - but PSU not even start with it plugged...
https://www.ebay.ca/itm/CPU-8Pin-to-Graphics-Video-Card-Double-PCI-E-PCIe-Power-Supply-Splitter-Cable/272720358725?hash=item3f7f666d45:g:fZAAAOSwiQ9ZQ5oL

Don't think you can use CPU 8pin to power GPU's only pcie 6/8 pins.

OhMyHolyToken

jr. member

Activity: 98

Merit: 2

Quote from: szafa on December 20, 2017, 01:07:54 AM

What psu you have?

Corsair 1000W and 750W.

I tried to use 8 pin CPU to two 6+2 PCI-E adapter from ebay - but PSU not even start with it plugged...
https://www.ebay.ca/itm/CPU-8Pin-to-Graphics-Video-Card-Double-PCI-E-PCIe-Power-Supply-Splitter-Cable/272720358725?hash=item3f7f666d45:g:fZAAAOSwiQ9ZQ5oL

szafa

hero member

Activity: 812

Merit: 500

What psu you have?

oddity2505

member

Activity: 120

Merit: 10

Quote from: OhMyHolyToken on December 20, 2017, 12:01:40 AM

Hi,

Can I use one PCI-E cable from PSU with two 8 pin to power two R9 280 card with two 6 pin each? Using two "8 to two 6 pin" cables like this?

Thanks

If you were about to use it to power some gtx 1060, for example, I would say yes. But R9 280 consumes so much. I would avoid using just one cable for both of them unless they are severely undervolted and mining cryptonight only.

nc50lc

legendary

Activity: 2534

Merit: 6080

Self-proclaimed Genius

Hey, Make sure that the Adapter you are using is not substandard.
Check the Wires, the connector's materials and edges.

or it'll end up like this: Burned 18 AWG Wire And 8-Pin VGA GPU Power Connectors

edwardceng

member

Activity: 266

Merit: 50

yes, you can do it. a 6 pin PCIE plug is rated up to 75 watts, and 6+2 pins connectors (8 pin) is 150 Watt. it's enough to power your GPUs

OhMyHolyToken

jr. member

Activity: 98

Merit: 2

Hi,

Can I use one PCI-E cable from PSU with two 8 pin to power two R9 280 card with two 6 pin each? Using two "8 to two 6 pin" cables like this?

Thanks

Topic: One PCI-E 2x 8 pin to power two 4x 6 pin card? (Read 127 times)