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