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Four green DDR4 server memory modules with gold contacts and black heat spreaders

NEMIX RAM

NEMIX RAM 512GB 4x128GB DDR4 2933MHz ECC RDIMM 4Rx4

SKU CH-NJ7R-Y4STT

A 512 GB registered ECC DDR4 kit with four 128 GB modules running at 2933 MHz for server upgrades

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 512 GB total capacity across four 128 GB modules
  • ECC protection detects and corrects data errors in flight
  • Registered signal buffering reduces electrical load on the memory bus
  • DDR4 2933 MHz speed delivers high bandwidth for server workloads
  • 2 V operation lowers power draw per module

Server-grade ECC RDIMM kit

This 512GB kit contains four 128GB DDR4 2933MHz registered DIMMs with ECC and 4Rx4 organisation. It is built for servers and workstations that require registered error-correcting memory at PC4-23400 speed. It is not for desktop PCs or laptops that use unbuffered non-ECC modules.

288-pin installation notes

Modules seat in standard 288-pin DDR4 RDIMM slots and operate at 1.2V. Registered signalling adds electrical load, so the motherboard must explicitly support registered ECC DIMMs and 4Rx4 density. Mixing with unbuffered or different-rank modules will prevent boot.

DDR4 2933 practical limits

The DDR4 2933 interface caps bandwidth at PC4-23400 per module. Total capacity is fixed at 512GB across the four slots used. Systems needing higher frequencies, greater densities per slot, or non-registered memory must choose a different platform.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $2,564.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
CAS latency 21
Lower than about 90% of the 439 comparable items (median 40).
Price per GB $5.01 per GB
Cheaper than about 73% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Model namePart#: MR23400-744K4-SM-SYS-5019P-M
Part numberPart#: MR23400-744K4-SM-SYS-5019P-M
Total capacity512 GB (4 × 128 GB)
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency21
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Power
Rated voltage1.2 V

Questions about this item

How can I verify the kit is running at 2933MHz with CL21 after installation?

Enter the server BIOS or use a tool such as CPU-Z to confirm the memory frequency reads 2933MHz and the CAS latency shows 21.

What is included in the kit and what extra items are required?

The kit contains four 128GB DDR4 2933MHz ECC RDIMM modules. No additional parts are needed if the server has free 288-pin registered DIMM slots.

Which capacity option should I choose for a 512GB upgrade?

This part number MR23400-744K4-SM-SYS-5019P-M provides exactly 512GB as a matched 4 x 128GB kit.

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