Asus GTX 680- How many power connectors?

[pans]

I have a Asus GTX 680 and it has 2 PCI-E 6 pin power sockets. Do I need to connect two 6-pin connectors from my PSU or just one is sufficient?

The manual says nothing about how many to connect.

 

[panwala95]

you have to connect both for the card to work

 

[pans]

Right. Thanks