EVGA NFORCE 680I SLI 122-CK-NF68-XX - Manual (Page 70)

Hardware Installation
19
8-pin ATX 12V Power (
PWR2
)
PWR2 , the 8-pin ATX 12V power connection, is used to provide power to the
CPU. Align the pins to the connector and press firmly until seated.
It is strongly recommended that you use an 8-pin ATX 12V
power supply; however, if you have a four-pin power supply,
plug the connector to pins 1, 2, 5, and 6 as shown.
Auxiliary Power for Graphics (
PWR3
)
The PWR3 connector is an auxiliary power connection for graphics cards.
Exclusive power for the graphics card provides better graphics performance.
GND 12V
1
8 4
5
1 5
Connect a four-pin
power plug to pins
1, 2, 5, and 6.
GND +1.2
+5V GND