New card, old cable!

[ckast1]

Hi there,

I've just bought a Sapphire R9 280X graphics card. It has two 8-pin sockets for the CPU. However, my CPU has only one cable with a 6-pin lead. How do I connect this in the best way? Could a 6 pin PCIe to dual 8 pin PCIe cable work?
By the way, the power supply is 300W peak, but it's a Dell Core i7 PC. Will this affect anything at all?
Many thanks.

 

[LrnzpKiller]

That power supply is not gonna run a Sapphire R9 280X. Sapphire recommends a 750 W power supply for that card

 

[Dark Lord of Tech]

You need a new power supply , 300w isn't even close.

550W TO 650W is a good place to start.

XFX 550W , or EVGA 550W GS or G2.

 

[ckast1]

Thanks a lot for your quick responses - much appreciated!

So if I went for a new power supply, would 650W really be enough or would it be better to go for 750W right from the start? And any suggestions for a good unit - how about the CORSAIR RM750, for example?

 

[Dark Lord of Tech]

RM aren't very good , look for a XFX , EVGA G2 or GS or Seasonic models , 650w is more than enough.

 

[Dark Lord of Tech]

https://pcpartpicker.com/parts/compare/evga-power-supply-220g20650y1%2Cevga-power-supply-220gs0650v1%2Cxfx-power-supply-p1650gts3x%2Cxfx-power-supply-p1650snlb9/

Here's 4 to look at.

 

[ckast1]

Thanks again for all your help. I went with the EVGA SuperNOVA G2 850W (as it was only a bit more expensive than the 750W) and it's all hooked up and working brilliantly!