NEC EXPRESS5800 Configuration Manual page 15

CONFIGURATION GUIDE
3.1.2 Memory Mirroring / Memory Lockstep Configuration
Available slots: 4 per processor
Product Name / Description
Additional 4GB Memory Module (2x 2GB)
4 GB (2 x 2 GB) DDR3-1333 ECC Registered Low Power DIMM
Additional 8GB Memory Module (2x 4GB)
8 GB (2 x 4 GB) DDR3-1333 ECC Registered Low Power DIMM
Additional 16GB Memory Module (2x 8GB)
16 GB (2 x 8 GB) DDR3-1333 ECC Registered Low Power DIMM
Additional 32GB Memory Module (2x 16GB)
32 GB (2 x 16 GB) DDR3-1066 ECC Registered Low Power DIMM
NOTE:

Minimum one memory kit per processor must be installed.
Memory Configuration Feature Comparison
See the table below for feature comparisons of memory configurations supported.
Performance
Data Protection
Data Correction
Redundancy
Available Memory
Available Memory
Channels
Notes
NEC Corporation
–
NEC EXPRESS5800/R120b-2
Independent
Channel
Best
No
ECC, x4 SDDC
No
Full physical
memory
3
-
Revision 6.3, February 2012
Memory Memory
Sparing Lockstep
Better Better
Multiple single bit No
error protection
ECC, x4 SDDC ECC, x8 SDDC
Partly No
Physical memory Full physical
memory
excluding spare
memory
3 2
All DIMMs in the Paired DIMMs must
system must be be identical.
identical.
Part Number
N8102-388
N8102-389
N8102-390
N8102-391
Memory
Mirroring
Good
Multiple single bit
and multi bit error
protection
ECC, x4 SDDC
Fully
Half physical
memory
2
Paired DIMMs must
be identical.