The Antec EarthWatts 750W CrossFire Ready Power Supply (model no. EA750) can be found today from Newegg.com for only $79.99 after rebate, which results in a $60 price reduction from the once $139.99 list price, and turns this into the lowest cost we could find for the Atec power supply by about $20. With this power supply users receive advanced Hybrid Cable Management for improved airflow, industrial-grade circuitry protection to guard against short-circuits, and a three year warranty for parts and labor. FREE shipping is included, and sales tax applies for residents of California, New Jersey, New York, and Tennessee.

The more powerful OCZ Z Series Gold 850W Modular Power Supply is currently available from Tigerdirect.com for only $169.99 after rebate, and has shipping rates starting at $7.77. Head to Amazon.com for the Corsair CMPSU-400CX 400W CX Series 80 Plus Certified Power Supply, now priced at $54 and includes FREE ground delivery. Finally, make sure your power supplies are working properly with the Thermaltake Dr. Power Supply Tester, now on sale at Nextwarehouse.com for $17.35 and has FREE shipping included.