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2-32 Chapter 2: Hardware information
•
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 550 W.
• Do not forget to connect the 4-pin/8pin EATX12V 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.
• If you want to use two high-end PCI Express x16 cards, use a PSU with
500 W to 600 W power or above to ensure the system stability.
Power supply requirements
Heavy Loading
CPU SMF 3.2XE
DDR533 256MB*4
PCI-E VGA Nvidia 7950GTX*2
SATA-HD 6
ESATA-HD 2
IDE-HD 1
CD-ROM 1
USB 2
PCI-E 1X 0
PCI 0
+12V-V2
(4 PIN)
+12V-V1
(24PIN)
+5V +3.3V VGA
+12V
HDD
+12V
HDD
+5V
+5VSB Total
PSU
Po_max
(W)
Io_max (A) 17 11.4 5.66 9.18 15.76 7.6 7.96 0.548
Io_rms (A) 12.35 7.68 4.42 8.52 10.74 3.32 5.26 0.413
Vout (V) 11.93 11.9 5.022 3.316 11.42 11.95
Po_max (W) 202.81 135.66 28.42 30.44 179.98 90.82 4.993 5.054 678.18
(continued on the next page)