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Eight green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 128GB (8x16GB) DDR5 4800 CL40 1.1V ECC RDIMM Dell PowerEdge XR7620 memory upgrade

SKU CH-TZ7B-PGB2N

Eight 16 GB DDR5 4800 CL40 ECC registered modules totalling 128 GB at 1.1 V for Dell PowerEdge XR7620

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB total capacity across eight 16GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design protects data integrity in servers
  • Low 1.10V operating voltage reduces power draw
  • Validated for Dell PowerEdge XR7620 rack server compatibility

128GB DDR5 ECC RDIMM kit for Dell PowerEdge XR7620

This 128GB kit contains eight 16GB DDR5 4800 RDIMM modules built with ECC and registered buffering. It is intended for administrators upgrading a Dell PowerEdge XR7620 rack server that requires registered ECC memory. The 288-pin form factor matches the server's DIMM slots exactly.

Sustained-load behaviour

The modules operate at DDR5 4800 with a CAS latency of CL40 and a voltage of 1.1V. Registered buffering reduces electrical load on the memory controller during continuous operation. ECC corrects single-bit errors in real time, helping maintain data integrity under prolonged heavy workloads such as virtualization or database tasks.

Build quality and daily handling implications

Chips are sourced from major OEM suppliers including Samsung Micron and Hynix. The kit ships as eight individual 1Rx8 RDIMMs without heat spreaders, allowing dense population of all available slots. Each module is stress tested under load before packaging to verify stability in the target platform.

How it compares

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

Price $3,313.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.89 per GB
Pricier than about 71% 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 numberMR38400-618K8
Total capacity128 GB (8 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items128 GB (8 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 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 CL40 RDIMM kit draw when the XR7620 runs continuously?

Each 16 GB module operates at 1.1 V, the standard DDR5 voltage, so the eight-module kit draws only the power required by the server's memory subsystem at that voltage.

What must the Dell PowerEdge XR7620 already have for this 128 GB registered ECC kit to function?

The server needs available 288-pin DDR5 RDIMM slots and a BIOS that supports 1Rx8 registered ECC modules at 4800 MT/s.

Will the 1Rx8 registered ECC modules work in the XR7620 alongside any existing DDR5 RDIMMs of a different rank or speed?

Dell's memory population rules for the XR7620 require matching rank and speed per channel; mixing 1Rx8 CL40 modules with other ranks or speeds may prevent the system from booting.

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