Corsair 600w builder series

It isn't bad. There are better power supplies though.

This one from XFX is better. It has more 12v power than the Corsair, even though the Corsair has "more wattage"

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

what about XFX 650W PRO650W Core Edition Single Rail ATX 12V 53A 24PIN ATX Power Supply 80PLUS Bronze PSU ? Costs less than the one you linked if I add shipping on to it, is it better? than the one you linked?

It's the same with the exception of being higher wattage.

For a system using a single Radeon HD 6870 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

For a system using two Radeon HD 6870 graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 600 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 45 Amps or greater and have at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.

The Corsair Builder Series CX600 V2 (CMPSU-600CXV2), with its combined +12 Volt continuous current rating of 40 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 6870. It is also insufficient to power your system configuration with two Radeon HD 6870 in 2-way CrossFireX mode.

The XFX ProSeries 550W Core Edition Full Wired (Bronze) (P1-550S-XXB9), with its combined +12 Volt continuous current rating of 44 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 6870. It is also insufficient to power your system configuration with two Radeon HD 6870 in 2-way CrossFireX mode.

The XFX ProSeries 650W Core Edition Full Wired (Bronze) (P1-650S-NLB9), with its combined +12 Volt continuous current rating of 53 Amps and with two 6-pin and two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 6870. It is also sufficient to power your system configuration with two Radeon HD 6870 in 2-way CrossFireX mode.