Sun Microsystems 220R service manual PCI Cards

PCI Cards

The PCI card power budget supports a total of 60 watts, which is distributed among four PCI cards in an arbitrary way as long as the total PCI power does not exceed 60 watts.

The following table lists 5 VDC PCI card power estimates

Voltage Rail	PCI Cards	Current Each	Current Total	Total Power
(VDC)	(Maximum	(Amps)	(Amps)	(Watts)
	Number)
5	4	3.0	12.0	<= 60 for all
3.3	0	0	0	voltage rails
				combined
+12	4	0.4	1.6
-12	4	0.1	0.4

.

The following table lists 3.3VDC PCI card power estimates.

Voltage Rail	PCI Cards	Current Each	Current Total	Total Power
(VDC)	(Maximum	(Amps)	(Amps)	(Watts)
	Number)
5	0	0	0	<= 60 for all
3.3	4	4.5	18.0	voltage rails
				combined
+12	4	0.4	1.6
-12	4	0.1	0.4

Memory System

The following table lists the memory system power budget.

Number of DIMMs	WC Current Total (Amps)	Total Power @5 VDC (Watts)
16	9.33	46.66

276 Sun Enterprise 220R Server Service Manual ♦ January 2000, Revision A