All the Corsairs have 6+2pin PCI-e connectors. You might have looked at one of the other PSU power leads.
To get the 4x PCI-e power leads you want you could go with:CORSAIR Pro Series HX650 650W
52Amps +12V and 4x 6+2pin PCI-e power leads.CORSAIR Enthusiast Series TX750 V2 750W
62Amps +12V and 4x 6+2pin PCI-e power leads.
Corsair has a special 15% off w/ promo code EMCNFJG23, ends 4/19