IBM System x3650 M4 HD
26
Power supplies
The server supports up to two redundant power supplies. Standard models come with one or two power
supplies (model dependent). The following table lists the power supplies.
Table 17. Power supplies
Part number
Feature
code
Description
Maximum
supported
Standard models
where used
94Y6667
A2EB
IBM System x 900W High Efficiency
Platinum AC Power Supply
2
M3x, 83x
94Y6669
A1H5
IBM System x 750W High Efficiency
Platinum AC Power Supply
2
All other models
94Y6668
A1H6
IBM System x 550W High Efficiency
Platinum AC Power Supply
2
94Y7631
A39N
IBM System x 750W High Efficiency
-48 V DC Power Supply
2
-
An AC power supply ships standard with one 2.8 m C13 - C14 power cord.
All IBM CFF power supplies are compliant with and exceed 80 Plus Platinum standard, as shown in the
following table. Maximum power efficiency is achieved at 50% load.
Table 18. Power supply efficiencies
Power supply unit
20% load
50% load
100% load
80 PLUS Platinum standard
90.00%
94.00%
91.00%
IBM Power supplies
IBM System x 900W High Efficiency Platinum AC Power Supply
90.45%
94.02%
91.89%
IBM System x 750W High Efficiency Platinum AC Power Supply
92.32%
94.31%
93.14%
IBM System x 550W High Efficiency Platinum AC Power Supply
92.94%
94.21%
92.74%
For power supply selection, use the following rule-of-thumb:
Select 550W power supplies if all of the following items are true:
8 or fewer DIMMs (no LRDIMMs)
16 or fewer HDDs
One CPU 115W or lower
1 or 2 PCIe adapters
No High IOPS adapters
No GPUs
