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Product Overview24
Power Output and Cooling
The HP xw9300 Workstation power supply contains 9 outputs:
• +3.3V—used with PCI, PCI-X, PCI-E, NVIDIA nForce Professional 2000 series MCPs, AMD8131,
LS1030, IEEE 1394, Audio, Super I/O, on-board logic
• +5V—used with storage (disk, optical, diskette), PCI, PCI-X, PCI-E, IEEE 1394, NVIDIA nForce
Professional 2000 series MCPs, USB, input to on-board regulators (1.2V, 1.5V, 1.8V, and 2.5V), SCSI
hard drives, and on-board logic
• +12V-A—used with PCI, PCI-X, PCI-E, IEEE 1394, system fans
• +12V-B—used with storage (disk, optical, floppy)
• +12V-C—used with PCI Express x16 auxiliary connectors
• +12VCPU0—input to onboard regulator that supplies power for CPU0, Mem0, and respective fan
• +12VCPU1—input to onboard regulator that supplies power for CPU1, Mem1, and respective fan
• -12V—used by PCI, PCI-X
• 5VSB—used for sleep circuitry
Table 1-5 Power Supply and Cooling (Voltage)
Voltage Minimum Maximum
3.3V 3.17V 3.47V
5V 4.85V 5.25V
12V CPU0 11.52V 12.6V
12V CPU1 11.52V 12.6V
12V-A 11.52V 12.6V
12V-B 11.52V 12.6V
12V-C 11.52V 12.6V
V12N -11.4V -12.6V
5VSB 4.85V 5.25V
Table 1-6 Power Supply and Cooling (Current)
Current Minimum Operating Continuous Maximum
3.3V 0A 3.1A 25A 35.0A
5V 0A 2.3A 23A 28.0A
12V CPU0 0A 3.1A 12.6A 16.0A
12V CPU1 0A 0A 12.6A 16.0A
12V-A 0A 0A 15A 18.5A
12V-B 0A 0A 3.8A 11.7A