Originally Posted by ~Darkseeker~
your psu must be old if it doesnt have a PCI-e power cable
ive never seen one in the last 2-3 years that doesnt have 6-pin power.
They are out there, unfortunately in the new system I've just bought, it doesn't have one (cheap PSU, replacement is on its way), it tends to be with older ones, cheaper ones, or ones with low wattage. A high quality, low wattage unit would easily power any video card that doesn't need a PCIe power connector, but if it doesn't have PCIe connectors because it is low quality, it would be best to swap it out first rather thn getting a new video card