Fujitsu D3141 Tehnical Manual page 32

Features
Intrasocket Mirroring with 2 CPUs and 4 Memory Boards
For one upgrade step, minimum 8 DIMMs (one color) have to be added.
Figure 12: Upgrade configuration for 2 CPUs and 4 memory boards
I
The same upgrade rules have to be applied for configurations with 3 or
4 CPUs.
32 Technical Manual
D3141 (RX600 S6)