PHS-memory 8GB RAM memory for Lenovo System x3650 M3 (4255) DDR3 RDIMM 1333MHz PC3-10600R

This 8GB RAM is 100% compatible with Lenovo System x3650 M3 (4255). What memory configurations are possible? You can use either ECC UDIMM or RDIMM memory.

Technology:

• UDIMM ECC 4GB RAM: 12 slots, maximum capacity 48GB
• RDIMM 16GB RAM: 18 slots, maximum capacity 288GB

UDIMM ECC memory and RDIMM (Registered) server memory cannot be used together. Therefore, when upgrading, you should know what memory is already present or completely upgrade to RDIMM memory.

Principles of memory configuration:

• The memory slots are organized in groups of 3.
• Each group of 3 can have a maximum of 2 slots for UDIMM ECC memory.
• Each group of 3 can have a maximum of 2 slots for 4Rank RDIMM memory.
• The different groups of 3 slots do not need to have the same capacities.
• Only the memory slots where the respective CPU is present can be used.

Memory configuration for good system performance:

• Distribute the memory evenly across the memory slots and evenly across the CPUs.
• With 3 identical memory modules per group of 3 slots, performance can be up to 3 times faster compared to configuring the group of 3 slots with only one memory module.
• If more than one CPU is present, the memory should be configured identically (mirrored to the other CPU) per CPU.