Installing and Configuring the EVGA nForce 680i SLI Motherboard

Power Connections

This motherboard requires an ATX power supply. To support a PCI Express motherboard with the addition of dual graphics cards using NVIDIA SLI technology, you are going to need a minimum of a 500W power supply. Make sure you have enough power to cover all the expansion cards you will be installing. To determine what you power requirements are for your specific configuration, refer to www.SLIzone.com.

24-pin ATX Power (PWR1)

PWR1 is the main power supply connector located along the edge of the board next to the DIMM slots. Make sure that the power supply cable and pins are properly aligned with the connector on the motherboard. Firmly plug the power supply cable into the connector and make sure it is secure.

PWR1 connector Plug power cable from system power supply to PWR1

Figure 3. PWR1 Motherboard Connector

Table 1. PWR1 Pin Assignments

Connector

 

Pin

Signal

 

 

1

+3.3V

24

13

2

+3.3V

 

 

3

GND

 

 

4

+5V

 

 

5

GND

12

1

6

+5V

7

GND

 

 

 

 

8

PWROK

 

 

9

+5V_AUX

 

 

10

+12V

 

 

11

+12V

 

 

12

+3.3V

Pin Signal

13+3.3V

14-12V

15GND

16PS_ON

17GND

18GND

19GND

20RSVD

21+5V

22+5V

23+5V

24GND

18

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Image 69
EVGA 122-CK-NF68-XX manual Power Connections, Pin ATX Power PWR1