•For a fully configured system, we recommend that you use a power

supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 400 W.

•Do not forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will not boot.

•Use of a PSU with a higher power output is recommended when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. See Table 2 for details.

Power suppl y requi rements

 

 

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Components/Peripherals

Heavy

Normal

Light

Intel® LGA775 CPU type

Intel Pentium EE

Intel Pentium D

Intel Pentium 4

PCIe™ x16 graphics cards

6800 Ultra x2

6800GT x2

6600GT x2

DDR DIMMs

4

2

2

HDD

4

2

2

Optical drive (DVD/CD-RW)

2

2

1

PCIe™ x 1 card

1

0

0

PCI cards

3

2

1

USB devices

6

4

3

Required +12V current

> 25A

> 20A

> 17A

Required wattage

>= 500W

>= 400W

>= 350W

10. ASUS EZ sel ector card connector (144-pi n SLI _CON)

This connector is for the ASUS proprietary ASUS EZ selector card that allows you to set the SLI mode to either Single Video card or Dual Video cards.

P5NSLI EZ Selector Card Connector

The EZ Selector card is set to Single Video Card by default.

1-34

Chapter 1: Product introduction