Table 7. Maximum memory speeds - 2400 MHz TruDDR4 memory
Specification
RDIMMs
LRDIMMs
3DS RDIMMs
Rank
Single rank
Dual rank
Quad rank
Octo rank
Part numbers
46W0821 (8 GB)
46W0829 (16 GB)
46W0833 (32 GB)
46W0841 (64 GB)
00YG941 (128 GB)
Rated speed
2400 MHz
2400 MHz
2400 MHz
2400 MHz
Rated voltage
1.2 V
1.2 V
1.2 V
1.2 V
Operating voltage
1.2 V
1.2 V
1.2 V
1.2 V
Maximum quantity*
96
96
96
96
Largest DIMM
8 GB
32 GB
64 GB
128 GB
Max memory capacity
0.75 TB
3 TB
6 TB
12 TB
Maximum operating speed - Performance mode (2:1 mode - SMI2 link operates at twice the speed shown)
1 DIMM per channel
1600 MHz
1600 MHz
1600 MHz
1600 MHz
2 DIMMs per channel
1600 MHz
1600 MHz
1600 MHz
1600 MHz
3 DIMMs per channel
1600 MHz
1600 MHz†
1600 MHz
1600 MHz
Maximum operating speed - RAS mode (1:1 mode - SMI2 link operates at the speed shown)
1 DIMM per channel
1866 MHz
1866 MHz
1866 MHz
1866 MHz
2 DIMMs per channel
1866 MHz
1866 MHz
1866 MHz
1866 MHz
3 DIMMs per channel
1600 MHz
1600 MHz†
1600 MHz
1600 MHz
* Maximum quantity supported is shown for all processors that are installed
† This speed is above the Intel standard and is achieved only when Lenovo TruDDR4 memory is used
Table 8. Maximum memory speeds - 2133 MHz TruDDR4 memory
Specification
TruDDR4 RDIMMs
TruDDR4 LRDIMMs
Rank
Single rank
Dual rank
Quad rank
Part numbers
46W0788 (8 GB)
46W0796 (16 GB)
95Y4808 (32 GB)
95Y4812 (64 GB)
Rated speed
2133 MHz
2133 MHz
2133 MHz
Rated voltage
1.2 V
1.2 V
1.2 V
Operating voltage
1.2 V
1.2 V
1.2 V
Maximum quantity*
96
96
96
Largest DIMM
8 GB
32 GB
64 GB
Max memory capacity
0.75 TB
3.0 TB
6 TB
Maximum operating speed - Performance mode (2:1 mode - SMI2 link operates at twice the speed shown)
1 DIMM per channel
1600 MHz
1600 MHz
1600 MHz
2 DIMMs per channel
1600 MHz
1600 MHz
1600 MHz
3 DIMMs per channel
1600 MHz
1600 MHz†
1600 MHz
Maximum operating speed - RAS mode (1:1 mode - SMI2 link operates at the speed shown)
1 DIMM per channel
1866 MHz
1866 MHz
1866 MHz
2 DIMMs per channel
1866 MHz
1866 MHz
1866 MHz
3 DIMMs per channel
1600 MHz
1600 MHz†
1600 MHz
* Maximum quantity supported is shown for all processors that are installed
† This speed is achieved only when Lenovo TruDDR4 memory is used
Lenovo System x3850 X6 (6241)
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