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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 512GB 8x64GB DDR5 4800 CL40 2Rx4 1.1V ECC RDIMM Dell PowerEdge XR7620 memory upgrade

SKU CH-CGP1-AFQHW

Eight 64 GB DDR5 ECC registered modules at 4800 MT/s CL40 1.1 V 2Rx4 for Dell PowerEdge XR7620 servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512GB total capacity across eight 64GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered RDIMM design protects data integrity
  • 1V operation reduces power draw in dense configs
  • Validated for Dell PowerEdge XR7620 rack servers

Dell PowerEdge XR7620 512GB kit

This registered ECC DDR5 kit delivers 512GB across eight 64GB modules for the Dell PowerEdge XR7620. It targets administrators who need maximum memory capacity in a single qualified configuration. The 288-pin RDIMM form factor matches the server’s memory slots exactly. No other platform is addressed by this part number.

Sustained load behaviour

Modules run at DDR5 4800 with CL40 latency and 1.10V, maintaining registered signal integrity under continuous enterprise workloads. ECC corrects single-bit errors while the 2Rx4 organisation supports high-density operation without signal degradation. Stress testing under load verifies stability for mission-critical deployments. Heat spreaders are absent, so chassis airflow must handle thermal dissipation.

Installation notes

Eight modules populate the XR7620’s DIMM slots in the order specified by Dell’s service manual. Registered buffering requires the platform’s memory controller to support RDIMM topology; unbuffered or LRDIMM configurations will not function. Mixing ranks or speeds can prevent POST, so install the full kit as a matched set. Builders needing fewer than eight modules should select a smaller qualified kit instead.

How it compares

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

Price $12,411.99
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 $24.24 per GB
Pricier than about 69% 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 DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-924K8
Total capacity512 GB (8 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items512 GB (8 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much power does the 1.1 V DDR5 4800 kit draw when the XR7620 runs continuously?

Each 64 GB module operates at 1.10 V; total draw depends on the server's memory controller and workload, not on the modules alone.

What must the PowerEdge XR7620 already have to accept this 8 x 64 GB registered ECC kit?

The server needs eight free 288-pin DDR5 RDIMM slots and a BIOS that supports 512 GB of registered ECC memory at 4800 MT/s.

Will these CL40 2Rx4 modules work alongside any existing DDR5 RDIMMs already installed in the XR7620?

Mixing ranks or latencies can prevent the system from booting; Dell recommends populating all eight slots with identical 2Rx4 CL40 modules for guaranteed operation.

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