Orion is an OEM often used by HEC. It's not the best PSU, but it should be adequate, as long as you don't try to heavily overclock.
That doesn't necessarily tell me what kind of connectors you have though (at least, I don't know how to interpret them in that way!)
Anyway, usually video cards will come with adapters in case you lack a 6 pin or two, but bear this in mind. Visually inspect your PSU and look for the connectors that are 6 pins (2 rows of 3). If you only have 1, or 0, then you will need an adapter that connects to two molex for every 1 6 pin. So that means, if you have no 6 pins, you will need 4 spare molex connectors, or 2 if you have one 6 pin already.
I would get a new PSU , don't risk your components with a low quality unit.