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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR5 5600MHz CL46 4Rx4 ECC RDIMM Lenovo ST650 V3 memory upgrade

SKU CH-V2MQ-8R58R

ECC registered DDR5 kit delivers 512 GB across eight 64 GB modules at 5600 MHz CL46 for Lenovo ThinkSystem ST650 V3 tower servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from eight 64 GB modules
  • DDR5 5600 MHz speed rated at PC5-44800
  • ECC registered RDIMM with 4Rx4 organisation for data integrity
  • 10 V operating voltage for DDR5 efficiency
  • Validated for Lenovo ThinkSystem ST650 V3 tower server

512GB DDR5 ECC RDIMM kit for Lenovo ST650 V3

This registered memory kit delivers 512GB across eight 64GB modules built for the Lenovo ThinkSystem ST650 V3 tower server. Each module runs at 5600MHz with CL46 latency at 1.1V. Error-correcting code and registered buffering protect data integrity in continuous workloads.

Suited for ST650 V3 capacity upgrades.

The kit targets administrators expanding the ST650 V3 to its maximum supported density with registered ECC DDR5. Systems that require unbuffered non-ECC memory or a different form factor cannot use these modules.

4Rx4 rank architecture dictates motherboard

The 4Rx4 organisation determines how the memory controller addresses each rank. Verify that the ST650 V3 memory subsystem supports this rank structure before installation.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $14,752.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $28.81 per GB
Pricier than about 81% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR44800-944K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items512 GB (8 × 64 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does the Lenovo ThinkSystem ST650 V3 require all eight DDR5 slots to be populated for this 512GB kit to function?

The kit contains eight 64GB DDR5 5600MHz ECC RDIMM modules. The Lenovo ThinkSystem ST650 V3 has eight DDR5 DIMM slots per processor, so this kit fills every slot when a single processor is installed.

Can I mix these 4Rx4 DDR5 5600MHz ECC RDIMMs with existing 2Rx8 modules in the same ST650 V3 server?

Mixing different rank configurations such as 4Rx4 and 2Rx8 in the same memory channel is not recommended. The server memory controller may not train correctly, leading to instability or reduced performance.

How can I verify the full 512GB is recognised and running at 5600MHz with ECC active after installation?

Enter the UEFI/BIOS setup during boot and check the memory information screen. It should show 512GB total, 5600 MT/s speed, and ECC enabled for each of the eight installed DIMMs.

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