Dell PowerEdge R6525 EMC Installation and Service Manual - Page 83

Table 43. Supported NPS modes by Processors, Table 44. Optimal NPS configuration, Model Number

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• During boot, if the selected NPSx option is not allowed for the model number (for example, if the processor model number changes between reboot), system will halt at the end of POST with UEFI0388 message displayed. On the next reboot, the system will fall back to NPS1 default setting. • During boot, if the preferred interleaving for the current NPSx is not possible due to memory configuration (for example, the memory population is inconsistent with the preferred interleaving), BIOS shows a warning message UEFI0391. NOTE: System is functional when UEFI0391 message is displayed. However, the system may not be configured for optimal performance. NPS system optimization Optimal system configuration is dependent on the processor model, memory configuration, and NPS settings. Match the memory configuration with the NPS settings available for the processor. Table 43. Supported NPS modes by Processors Model Number NPS modes supported 7742 4, 2, 1, 0 7702 4, 2, 1, 0 7662 4, 2, 1, 0 7642 4, 2, 1, 0 7552 2, 1, 0 7542 4, 2, 1, 0 7532 4, 2, 1, 0 7502 4, 2, 1, 0 7452 4, 2, 1, 0 7402 4, 2, 1, 0 7352 4, 2, 1, 0 7302 4, 2, 1, 0 7282 1, 0 7272 1, 0 7262 4, 2, 1, 0 7252 1, 0 7F72 2, 1, 0 7F52 4, 2, 1, 0 7F32 4, 2, 1, 0 7H12 4, 2, 1, 0 Table 44. Optimal NPS configuration Number of NPS DIMMs per processor 0 1 2 4 1 X 2 X 3 X 4 X 5 X 6 X Installing and removing system components 83

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•
During boot, if the selected NPSx option is not allowed for the model number (for example, if the processor model number changes
between reboot), system will halt at the end of POST with UEFI0388 message displayed. On the next reboot, the system will fall back
to NPS1 default setting.
•
During boot, if the preferred interleaving for the current NPSx is not possible due to memory configuration (for example, the memory
population is inconsistent with the preferred interleaving), BIOS shows a warning message UEFI0391.
NOTE:
System is functional when UEFI0391 message is displayed. However, the system may not be configured for
optimal performance.
NPS system optimization
Optimal system configuration is dependent on the processor model, memory configuration, and NPS settings. Match the memory
configuration with the NPS settings available for the processor.
Table 43. Supported NPS modes by Processors
Model Number
NPS modes supported
7742
4, 2, 1, 0
7702
4, 2, 1, 0
7662
4, 2, 1, 0
7642
4, 2, 1, 0
7552
2, 1, 0
7542
4, 2, 1, 0
7532
4, 2, 1, 0
7502
4, 2, 1, 0
7452
4, 2, 1, 0
7402
4, 2, 1, 0
7352
4, 2, 1, 0
7302
4, 2, 1, 0
7282
1, 0
7272
1, 0
7262
4, 2, 1, 0
7252
1, 0
7F72
2, 1, 0
7F52
4, 2, 1, 0
7F32
4, 2, 1, 0
7H12
4, 2, 1, 0
Table 44. Optimal NPS configuration
Number of
DIMMs per
processor
NPS
0
1
2
4
1
X
2
X
3
X
4
X
5
X
6
X
Installing and removing system components
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