GPU power pins

[dal2000]

Ok,

Just got an R9 280X. Have the XFX 650 watt pro psu. On the psu it has 2x6 pins and 2x8 pins. The one six pin is missing a black cable, however it's labled PCI-E and the other is not. Black is ground. So does it matter not having the one ground pin not connected?

Thanks

 

[Off-The-Chart]

Fixed FDD : up to 1
Fixed Peripheral : up to 7
Fixed 6-pin PCI-E : 2
Fixed 6+2-pin PCI-E : 2
Fixed ATX12V / EPS12V : One 4+4-pin
Fixed Motherboard Connector : 20+4 Pin
Fixed SATA : up to 8

where are the 6+2 used?

personally, I would not use it, as by looking at my 280x, the 6-pins have all 6 their cables.

 

[dal2000]

where are the 6+2 used?

personally, I would not use it, as by looking at my 280x, the 6-pins have all 6 their cables.

Well i'm more curious if I go SLI.

 

[dal2000]

crossfire*

 

[Rickster]

2x R9 280X on a 650w PSU? You kidding right?

 

[dal2000]

2x R9 280X on a 650w PSU? You kidding right?

No i'm not, and 650 is plenty. http://products.xfxforce.com/en-gb/Power_Supplies/Pro_Series_650W_PSU/P1-650S-UKB9

 

[dal2000]

2x R9 280X on a 650w PSU? You kidding right?

Oh nevermind. Saw your 2X lol. I thought you were referring to one haha

 

[Pada]

2x R9 280X on a 650w PSU? You kidding right?

You'll need a decent 850W PSU if you want to run 2x R9 280X OC cards, because a single one uses about 350W when running Furmark!

 

[dal2000]

You'll need a decent 850W PSU if you want to run 2x R9 280X OC cards, because a single one uses about 350W when running Furmark!

True that. Guess I wasn't aware it used that much power.

 

[dal2000]

Still need an answer with regards to missing one black pin cable on the 6 pin connector. New PSU and GPU so i'm concerned. Any PSU gurus that can help?

 

[Rickster]

Still need an answer with regards to missing one black pin cable on the 6 pin connector. New PSU and GPU so i'm concerned. Any PSU gurus that can help?

Send a picture.

 

[Pada]

Here's the pinout: http://www.allpinouts.org/index.php/PCI_Express_(PCIe)_6pin_power
You'll see that PIN 2 (yellow) does not have to be connected: http://tpucdn.com/articles/116/images/pcie.jpg

 

[dal2000]

Sorry guys, i'm quite the idiot. Put the PSU in where there was light at an angle, the black cable does exist lol; it was just pushed to the side so it looked like it was non-existent and there was only two of them.