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Four green DDR4 RDIMM sticks without heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR4 2933 CL21 RDIMM memory upgrade

SKU CH-3B7M-DFGRD

256 GB registered DDR4 ECC kit with four 64 GB modules at 2933 MHz CL21 for Dell Precision 7820 Tower Workstation

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 256 GB kit expands server capacity for large workloads
  • Four 64 GB modules populate all channels for balanced bandwidth
  • DDR4 2933 speed matches Dell Precision 7820 specifications
  • ECC registered design detects and corrects data errors
  • 2 V operation reduces power draw under load

256GB RDIMM kit for Dell Precision 7820

This registered DDR4 kit delivers 256GB across four 64GB modules built for the Dell Precision 7820 Tower Workstation. Each module operates at 2933MT/s with CL21 latency and 1.2V power draw. ECC and 4Rx4 organisation protect data integrity in mission-critical workloads.

Sustained load behaviour with ECC registered design

Registered buffering reduces electrical load on the memory controller during continuous operation. ECC corrects single-bit errors in real time without halting the system. The 4Rx4 layout maintains signal stability across all four modules when the workstation runs extended compute or virtualisation tasks.

DDR4 288-pin interface practical limits

The 288-pin DDR4 RDIMM form factor fits only platforms that support registered ECC memory at 2933MT/s. Systems requiring unbuffered UDIMMs or higher voltage modules cannot use this kit. Maximum capacity per channel depends on the workstation's memory controller specification.

How it compares

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

Price $1,629.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.37 per GB
Cheaper than about 62% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR4 2933 MHz RDIMM Registered Server Memory
Part numberMR23400-944K4
Total capacity256 GB (4 × 64 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 rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell
In the box
Included items256 GB (4 × 64 GB) DDR4 2933 MHz PC4-23400 4Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much power does the 256GB DDR4 2933 kit draw at 1.20V when the workstation runs continuously?

Each 64GB module operates at 1.20V; total system draw depends on the Dell Precision 7820 memory controller and workload, not the modules alone.

What must the Dell Precision 7820 already have to accept this 4Rx4 RDIMM kit?

The workstation needs a compatible DDR4 RDIMM motherboard with four free 288-pin slots and a BIOS that supports 4Rx4 registered ECC modules at 2933 MT/s.

Can I mix these CL21 2933 modules with slower DDR4 RDIMMs already installed in the 7820?

The Dell Precision 7820 will clock all populated channels to the lowest common speed and latency; matching speed, rank and voltage avoids down-clocking.

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