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1-34 Chapter 1: Product introduction
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For a fully congured system, we recommend that you use a power
supply unit (PSU) that complies with ATX 12 V Specication 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
conguring 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 supply requirements
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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 selector card connector (144-pin 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.
The EZ Selector card is set to Single Video Card by default.
R
P5NSLI EZ Selector Card Connector