Table 9. Maximum memory speeds - DDR3 memory
DIMM
specification
DDR3 RDIMMs
DDR3 LRDIMMs
Rank
Single rank
Dual rank
Quad rank
8-rank
Part numbers
00D5024 (4GB)
00D5036 (8GB)
46W0672 (16GB)
46W0676 (32GB)
46W0741 (64GB)
Rated speed
1600 MHz
1600 MHz
1600 MHz
1333 MHz
Rated voltage
1.35 V
1.35 V
1.35 V
1.35 V
Operating voltage
1.35 V
1.5 V
1.35 V
1.5 V
1.35 V
1.5 V
1.35 V
1.5 V
Max qty supported*
96
96
96
96
96
96
96
96
Max DIMM capacity
8 GB
8 GB
16 GB
16 GB
32 GB
32 GB
64 GB
64 GB
Max memory
capacity
0.75 TB
0.75 TB
1.5 TB
1.5 TB
3 TB
3 TB
6 TB
6 TB
Maximum operating speed - Performance mode (2:1 mode - SMI2 link operates at twice the speed shown)
1 DIMM per channel
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
2 DIMMs per channel
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
3 DIMMs per channel
1066
MHz
1333
MHz
1066
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
Maximum operating speed - RAS mode (1:1 mode - SMI2 link operates at the speed shown)
1 DIMM per channel
1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1333
MHz
2 DIMMs per channel
1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1333
MHz
3 DIMMs per channel
1066
MHz
1333
MHz
1066
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
* Maximum quantity supported is shown for all processors that are installed
The following memory protection technologies are supported:
ECC
Chipkill (for x4-based memory DIMMs)
Redundant bit steering (Double Device Data Correction)
Memory mirroring
Memory rank sparing
Chipkill and Redundant Bit Steering are supported in RAS mode. Chipkill is supported in Performance
mode.
If memory mirroring is used, DIMMs must be installed in pairs for Performance mode (minimum of one pair
per each processor) and quads for RAS mode. DIMMs in the pair/quad must be identical in type and size.
If memory rank sparing is used, then a minimum of two single-rank or dual-rank DIMMs must be installed
per populated channel (the DIMMs do not need being identical). In rank sparing mode, one rank of a DIMM
in each populated channel is reserved as spare memory. The size of a rank varies depending on the
DIMMs that are installed.
Internal storage
Lenovo System x3850 X6 (6241)
20