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Green circuit board with gold edge connector and black memory chips

NEMIX RAM

NEMIX RAM 16GB DDR4 2933MHz ECC RDIMM CL21 1.2V 1Rx4 288-Pin Lenovo 4ZC7A08707 memory upgrade

SKU CH-CSKW-1V4PA

16 GB DDR4 2933 MHz ECC registered DIMM for Lenovo ThinkSystem servers, CL21 latency at 1.2 V

  • Total capacity16 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 16 GB DDR4 ECC RDIMM protects data integrity in servers
  • 2933 MHz PC4-23400 speed supports demanding workloads
  • CL21 latency at 1.20 V balances performance and efficiency
  • 1Rx4 288-pin registered design fits Lenovo ThinkSystem 4ZC7A08707 slots
  • Major OEM Samsung Micron Hynix chips ensure enterprise-grade reliability

Lenovo ThinkSystem DDR4 ECC RDIMM

This 16 GB registered DDR4 module runs at 2933 MHz with CL21 latency and 1.2 V operation. It is built for Lenovo ThinkSystem servers that require ECC RDIMM memory. The single-rank 1Rx4 organisation uses major OEM DRAM from Samsung, Micron or Hynix. No heat spreader is fitted.

Verify server slot count and maximum capacity

Confirm that your ThinkSystem model accepts 288-pin DDR4 RDIMMs and supports the 16 GB density per slot. Check the system documentation for the total number of DIMM slots and the maximum installed memory allowed. Ensure the platform is configured for registered ECC modules rather than unbuffered or non-ECC types.

Fits registered ECC memory channels

The module installs directly into a 288-pin DDR4 RDIMM slot on a compatible ThinkSystem motherboard. Registered buffering reduces electrical load on the memory controller, freeing capacity for larger total system memory. ECC operation corrects single-bit errors to maintain data integrity in mission-critical workloads.

How it compares

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

Price $122.99
Cheaper than about 65% 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 $7.69 per GB
Typical for this category: the median of 20,941 items is $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 numberMR23400-614K1
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 rank1Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items16 GB (1 × 16 GB) DDR4 2933 MHz PC4-23400 1Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the module ship alone or with extra parts such as a heat spreader?

The package contains one 16GB 288-pin DDR4 RDIMM only; no heat spreader or additional accessories are included.

Should I pick a 1Rx4 CL21 stick or a different rank and latency for my ThinkSystem?

Choose the 1Rx4 CL21 2933MHz ECC registered module because it matches the Lenovo 4ZC7A08707 specification.

Will the rated 2933MHz speed actually run at that frequency in my server?

In a compatible Lenovo ThinkSystem the module operates at 2933MHz (PC4-23400) with CL21 timing at 1.2V.

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