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6870 needs 2 6 pin power cables, but PSU only has 1 6 pin power cable

Last response: in Graphics & Displays
June 6, 2011 10:57:12 PM

Hello. I just bought a 6870 from Newegg, and put it in my computer, only to realize that my PSU only has one 6-pin power cable, but i need two 6-pin power cables. I also have a 4-pin power cable. What should I do? Is there some kind of adapter that I could use? If so please tell me, If there is a different solution other than that or buying a new PSU that would be even better. Thank you in advance - Jrwizbang

P.S. (Please respond as soon as possible.)
June 6, 2011 11:05:25 PM

What PSU do you have (brand and model, not just wattage). You'll want to be sure it is actually capable of powering your card before you use adapters.
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June 6, 2011 11:33:14 PM

The 6870 only just needs the second connector (it wouldn't need it if it ignored PCI-E 1.1). You can use the PCI-E to molex adapter if you need to. Your PSU should be enough to power it, but only just. I recommend you upgrade your PSU if your system becomes unstable when you stress it.
June 6, 2011 11:49:10 PM

Which one is the second connector? And plus, thank you. I will use the adapter and let you know how well my PSU does, and if it is not stable could you recommend me a new PSU?I think it will be okay but once again thank you both.
June 6, 2011 11:49:37 PM

Best answer selected by Jrwizbang.
June 6, 2011 11:52:11 PM

A quality modern PSU has full range active PFC (no little voltage switch) and 80+ certification for efficiency. Seasonic, Antec, Corsair, Enermax, and XFX are among the better brands. 500W-550W should be sufficient, and will have your PC operating in the middle of its range, where it is most efficient.
June 7, 2011 3:42:29 AM

I am getting a 700w-750w modular psu.