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STL2 Server Board TPS Power Consumption
Revision 1.0 6-81
6. Power Consumption
6.1 Calculated Power Consumption
The following table shows the calculated power consumption for each of the power supply
voltage rails for the STL2 server board. These values were calculated using the specifications
for the on-board components and processors. Assumptions for add-in card power and other
peripherals powered from the server board are included in the table. Customers will need to
modify the calculated power consumption numbers based on their anticipated usage – watts
per PCI slot, etc.
Note: The following numbers are provided only as an example. Actual power consumption will
vary depending on the exact configuration, temperature, voltage level, etc. Refer to the
appropriate system chassis document for more information.
Table 6-1. STL2 Server Board Calculated Power Consumption
Device(s) 3.3V +5V +12V -12V 5V Standby Totals
Server Board
4.6A 12.5A 0.06A 0.0A 0.18A
Processors (87% VRM
efficiency, 100% utilization)
1 x 667 MHz/256K
processor
4.02A
1 x 733 MHz/256K
processor
4.21A
1x 800EB MHz/256K
processor
4.78A
1x 866 MHz/256K
processor
5.26A
1x 933 MHz/256K
processor
5.63A
1x 1 GHz/256K processor 6.0A
Memory (Four PC133
Registered GB SDRAM
DIMMs)
5.5A
PCI Connectors
32 bit PCI slots (10W per slot
on 5V)
8.0A 0.4A
64 bit PCI slots (10W per slot
on 3.3V)
6.06A 0.2A
USB (500mA per connector)
1.00A
Keyboard/Mouse
0.50A
SCSI term power Included in board spec.
Fans (3 chassis and 2
processor)
1.32A
Total Current
16.16A 34.0A 1.38A 0.0A 0.78A Total
Total Power
53.33W 170.0W 16.6W 0.0W 3.9W 243.83W