I've just built my first PC and my (non-modular) power supply has only one 6-pin power connector. That's not an issue at the moment because I'm using a 5770, but I'm wondering about upgrading in the future to a card that needs two connectors. I'm pretty sure my system has enough juice to run most two-connector cards.
Will I need a new power supply if I ever want to use a double-connector graphics card? Or is there any kind of adapter? The PSU has a spare 4-pin connector and several spare molex connectors if that makes any difference.