Dell EMC E45S Installation And Service Manual page 50

● 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 15. Supported NPS modes by Processors
Model Number
75F3
7713P
7663
7513
7543P
74F3
7443
7443P
7313P
7643
72F3
7742
7702
7702P
7662
7642
7552
7542
7532
7502
7502P
7452
7402
7402P
7352
7302
7302P
7282
7272
7262
50 Installing and removing system components
NPS modes supported
4, 2, 1, 0
4, 2, 1
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1
4, 2, 1
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1
4, 2, 1, 0
4, 2, 1, 0
2, 1, 0
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1
4, 2, 1, 0
4, 2, 1, 0
4, 2, 1
1, 0
1, 0
4, 2, 1, 0