CORSAIR CX Series CX750 80 PLU. Corsair CX750 750 Watt 80 PLUS Bronze ATX Power Supply CP9020279NA. Delivers consistent power to your PC with up to 88% operational efficiency, generating less heat and lowering your energy costs. Fitted with a thermally controlled fan that only spins at high speed when your power supply is under heavy load, automatically slowing down for quieter operation at lower loads. A compact 125mm-long casing ensures an easy fit in almost all modern PC cases. Our award-winning service means you can enjoy your gear worry-free. Number of +12V Rails. 3.3 V DC. Number of SATA Power Connectors. Number of (6+2 pin) PCI Express Power Connectors. Number of (4+4 pin) CPU Power Connectors. CX Series CX750 – 750 Watt 80 PLUS Bronze ATX Power Supply.