Newegg.com is currently offering the Coolmax CX-550B 550W Power Supply (model no. CX-550B) for only $55.99, and includes a $30 mail-in-rebate that drops it even more down to $25.99. With the rebate customers save $44 off the $69.99 list price, and about $19 by not purchasing this item at the next best available price. Features include a 120mm silent fan design, six peripheral connectors, and a one year limited warranty through the manufacturer. Shipping rates start at $9.20 and sales tax applies for residents of California, New Jersey, New York, and Tennessee.

In addition to the Coolmax, Newegg.com also has the Thermaltake 850W SLI Ready, CrossFire Certified Power Supply on sale, which is available for $109.99 after its mail-in-rebate with FREE shipping included. The more powerful Antec TruePower Quattro 1200W Power Supply can be found at Nextwarehouse.com, and is priced at only $229.85. Save 29% on the environmentally friendly Antec EarthWatts Green 380W Power Supply, currently located at Buy.com and on sale for $42.24.