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Green rectangular DDR4 RDIMM module with black memory chips and gold edge contacts

NEMIX RAM

NEMIX RAM 16GB DDR4 2933 CL21 2Rx8 ECC RDIMM memory upgrade

SKU CH-7QP2-GT3DN

16 GB DDR4 2933 CL21 2Rx8 ECC RDIMM module for Lenovo ThinkSystem servers

  • Total capacity16 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 16GB DDR4 2933 CL21 ECC RDIMM for Lenovo ThinkSystem servers
  • Registered 2Rx8 design with Samsung Micron Hynix chips for data integrity
  • 2V operation reduces power draw in dense rack deployments
  • 288-pin RDIMM form factor installs in compatible Lenovo ThinkSystem bays
  • PC4-23400 bandwidth supports virtualization and database workloads

16 GB DDR4 RDIMM for Lenovo ThinkSystem

This 16 GB registered DDR4 module runs at 2933 MT/s with CL21 latency and 1.2 V operation. It is built for Intel-based Lenovo ThinkSystem servers that require ECC RDIMM memory. The single-rank 2Rx8 organisation uses major OEM DRAM from Samsung, Micron or Hynix.

Sustained-load behaviour with ECC and registration

The registered buffer reduces electrical load on the memory controller, helping stability when all slots are populated under continuous workloads. ECC corrects single-bit errors in real time, preventing data corruption during long compute jobs. The 1.2 V rating keeps power draw predictable across extended duty cycles.

Check slot count and maximum capacity per channel

Verify that your ThinkSystem model accepts 288-pin DDR4 RDIMMs and supports 16 GB modules at 2933 MT/s. Confirm the maximum memory per socket and the qualified vendor list for the specific server SKU. Ensure the BIOS is current enough to recognise the module part number MR23400-628K1.

How it compares

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

Price $116.99
Cheaper than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.31 per GB
Cheaper than about 55% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineLenovo Server/Workstation Compatible Series Memory
Model nameLenovo DDR4 2933 MHz ECC RDIMM Registered Server Memory
Part numberMR23400-628K1
Total capacity16 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items16 GB (1 × 16 GB) DDR4 2933 MHz PC4-23400 2Rx8 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much power does the 1.2 V DDR4 2933 module draw when the server runs continuously?

The module operates at 1.20 V, the standard voltage for DDR4, so power draw stays within the normal envelope for registered server memory under sustained load.

What motherboard feature must my Lenovo ThinkSystem already have to accept this 288-pin ECC RDIMM?

The board must provide DDR4 RDIMM slots that support registered ECC modules; the 288-pin form factor and 2Rx8 organisation are standard for compatible ThinkSystem servers.

Will this 2Rx8 CL21 stick work alongside older 1Rx4 DDR4 modules already installed in the same channel?

Mixing ranks and latencies is not recommended; the server will typically down-clock all modules to the slowest common speed and may disable multi-rank optimisations.

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