Unless you have a very high end psu it will only have a 4+4 atx 12v cable - which can be used as a single 4 pin or a single 8 pin by clipping the connectors together first.
Unless you have a very high end psu it will only have a 4+4 atx 12v cable - which can be used as a single 4 pin or a single 8 pin by clipping the connectors together first.