The power requirements for the EVGA 7 series graphics cards are as follows:
7950GX2 models
Minimum of a 450 Watt power supply.
(minimum +12 Volt current rating of 28 amps)
An available 6 pin PCI-E power connector*
7950 GT models
Minimum of a 400 Watt power supply.
(minimum +12 Volt current rating of 20 amps)
An available 6 pin PCI-E power connector*
7900GTX models
Minimum of a 450 Watt power supply.
(minimum +12 Volt current rating of 22 amps)
An available 6 pin PCI-E power connector*
7900GTO models
Minimum of a 450 Watt power supply.
(minimum +12 Volt current rating of 22 amps)
An available 6 pin PCI-E power connector*
7900GT models
Minimum of a 400 Watt power supply.
(minimum +12 Volt current rating of 20 amps)
An available 6 pin PCI-E power connector*
7900GS models
Minimum of a 400 Watt power supply.
(minimum +12 Volt current rating of 20 amps)
An available 6 pin PCI-E power connector*
7800GTX models
Minimum of a 450 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
An available 6 pin PCI-E power connector*
7800GT models
Minimum of a 450 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
An available 6 pin PCI-E power connector*
7800GS models
Minimum of a 350 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
An available 6 pin PCI-E power connector*
7600GT models
Minimum of a 350 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
An available 4 pin molex connection
7600GS models
Minimum of a 350 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
An available 4 pin molex connection
7300GT models
Minimum of a 350 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
7300GS models
Minimum of a 250 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
7200GS models
Minimum of a 250 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
7100GS models
Minimum of a 250 Watt power supply.
(minimum +12 Volt current rating of 18 amps)
*hard drive power dongle to PCI-E 6 pin adapter included with card