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Six green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 6400MHz CL52 4Rx4 ECC RDIMM memory upgrade

SKU CH-2B3S-J0X5V

Six 128 GB DDR5 ECC registered DIMMs deliver 768 GB at 6400 MHz CL52 for Dell PowerEdge XE9685L servers

  • Total capacity768 GB (6 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank4Rx4

Size 768GB 6X128GB

Show 6 more

Speed 6400MHz

  • Massive 768 GB capacity from six 128 GB modules
  • ECC registered design protects data integrity in servers
  • DDR5 6400 MHz speed with CL52 latency
  • Low 1.1 V operation reduces power draw
  • Validated for Dell PowerEdge XE9685L rack servers

768 GB DDR5 ECC RDIMM kit for Dell PowerEdge XE9685L

This 768 GB kit contains six 128 GB DDR5 6400 MHz registered DIMMs built for the Dell PowerEdge XE9685L rack server. It delivers error-correcting, registered memory for enterprise workloads that demand data integrity and high capacity. The modules operate at 1.1 V with a CAS latency of CL52.

DDR5 6400 MHz registered interface limits

The DDR5 6400 MHz RDIMM interface requires a platform that supports registered ECC memory at this data rate and voltage. Systems without registered DIMM support or with lower maximum speeds cannot use the kit at its rated frequency. Mixing with unbuffered or non-ECC modules is not supported.

4Rx4 rank density decides fit

Each module uses a 4Rx4 organisation that determines electrical loading on the memory bus. The server memory controller must be qualified for this rank density per channel. If the platform specifies a different rank-per-channel limit the kit will not operate correctly.

How it compares

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

Price $24,885.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $32.40 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-744K6
Total capacity768 GB (6 × 128 GB)
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items768 GB (6 × 128 GB) DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Should I choose the 6x128GB kit or a different capacity for my Dell PowerEdge XE9685L?

The kit provides 768GB total across six 128GB modules, filling six slots with 4Rx4 registered ECC DDR5 at 6400MHz.

What does the 6400MHz rating deliver once installed in the server?

The modules run at PC5-51200 speed with CL52 latency at 1.1V, giving the maximum supported throughput for the platform.

How does the 288-pin DDR5 RDIMM interface limit performance in practice?

The registered 288-pin DDR5 form factor caps operation to the server's qualified 6400MHz CL52 profile with ECC and 4Rx4 organisation.

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