Newegg offers the Thermaltake Toughpower 750-watt ATX Power Supply, model no. PS-TPD-0750MPCGUS-1, for $79.99. This $25 mail-in rebate cuts it to $54.99. With free shipping, that's tied with last month's mention as the lowest total price we've seen. (It's a current best by $25.) This 80 PLUS Gold-certified power supply features an efficiency up to 92%, 140mm fan, and is SLI / CrossFire ready. Deal ends March 28.