80Plus power supply
The 80Plus power supply provides reliable power to a workstation that is configured with high wattage
devices. The following sections provide specification information for the 80Plus power supply.
Power supply description
Table 1-11 Power supply source voltages
Source
voltage
Description
+3.3V PCI, MCH, ICH5, PXH, LAN, SATA, and SAS hard drives, and on-
board logic
+5V Storage (disk, optical, diskette), PCI, audio, USB, input to on-board
regulator, and on-board logic
+12V-B PCI, fans, and input to on-board regulators that supply 1.2V
+12V-D Storage (disk, optical, diskette), PCI Express x16 auxiliary connector
+12VCPU0 Input to on-board regulator that supplies power for CPU0 and input to
on-board regulators that supply 1.5 V and 1.8 V to memory slots
+12VCPU1 Input to on-board regulator that supplies power for CPU1
-12V PCI
5VSB Standby mode circuitry
Table 1-12 Power supply voltage
Voltage Minimum Maximum
3.3 V 3.2 V 3.5 V
5.1 V 4.8 V 5.3 V
12 VCPU0 11.5 V 12.6 V
12 VCPU1 11.5 V 12.6 V
12 V-A 11.5 V 12.6 V
12 V-D 11.5 V 12.6 V
V12N –10.9 V –13.2 V
5.08 VSB 4.8 V 5.3 V
Table 1-13 Power supply current
Current Minimum Operating Continuous Maximum
3.3 V 0 A 0.5 A 18 A 20 A
5.1 V 0 A 0.5 A 18 A 20 A
12 VCPU0 0 A 3.1 A 17 A 19 A
12 VCPU1 0 A 3.1 A 10 A 15 A
12 V-D 0 A 3.1 A 12 A 15.5 A
10 Chapter 1 Product overview ENWW