Newegg offers the XFX 850-watt Full Modular Active PFC ATX Power Supply, model no. P1-850B-BEFX, for $104.99. This $30 mail-in rebate cuts it to $74.99. With free shipping, that's the lowest total price we could find by $46. This 80 PLUS Gold power supply features five peripheral connectors and 10 SATA connectors. Deal ends today.