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How to run two AMD Radeon HD 5870's on ozc 700w psu

Last response: in Graphics & Displays
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January 3, 2012 2:39:33 AM

i just got my system up to speed with a new graphics card, 5870 but i want to add a second in crossfire on my asus x58 sabertooth, core i7 950, 12 gigs corsair. The 700w ozc power supply that i have only came with a 6 pin and a 6/8 pin pci express modular cables. Now can my current psu power two standard 5870 1gb cards alone? and does ozc distribute modular 6 pin pci express from the other plugs on my power supply.
January 3, 2012 2:53:13 AM

you cant it does not supply enough power
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January 3, 2012 3:03:30 AM

thanks-thats what i figured
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January 3, 2012 3:10:56 AM

wynbrg23 said:
i just got my system up to speed with a new graphics card, 5870 but i want to add a second in crossfire on my asus x58 sabertooth, core i7 950, 12 gigs corsair. The 700w ozc power supply that i have only came with a 6 pin and a 6/8 pin pci express modular cables. Now can my current psu power two standard 5870 1gb cards alone? and does ozc distribute modular 6 pin pci express from the other plugs on my power supply.


Of course it can supply power for both your cards.

Go to http://extreme.outervision.com/psucalculatorlite.jsp enter your desktop specs and it will tell you, how much power your system will consume.

I did a quick and dirty calc for u , I made the assumption that you had 4 92mm fans and 4 hdd together with your system description and the total wattage came to 544 watts.
So your PSU is definitely enough for 2 5870s.

All you need now to feed your GPUs is a couple of molex to 8 pin adapters or if you can get the 8 pin modular cables from OCZ
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January 3, 2012 3:16:54 AM

Thanks assudc,
i only am running two drives, few fans but i feel more confident if i come across another 5870 for 139 that i just found and purchased which i am loving.
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January 3, 2012 3:25:33 AM

Best answer selected by wynbrg23.
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January 3, 2012 3:31:42 AM

and i redid the power supply consumption you have enough amd recommends at least 600 watts minimum
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