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Sixteen green DDR5 RDIMM sticks in a row, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (16x32GB) DDR5 4800 CL40 2Rx4 1.1V ECC RDIMM server RAM

SKU CH-R5AX-86G88

A 512 GB DDR5 registered ECC kit of sixteen 32 GB modules running at 4800 MT/s with CL40 latency and 1.1 V operation

  • Total capacity512 GB (16 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 512 GB total capacity from 16 x 32 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.10 V operating voltage
  • ECC registered 2Rx4 architecture for server data integrity
  • 288-pin RDIMM form factor compatible with Dell PowerEdge R860

Server Memory Kit

This NEMIX RAM kit provides 512GB of DDR5 server memory across sixteen 32GB registered DIMMs. It is built for IT professionals managing mission-critical workloads on compatible Dell PowerEdge platforms. The modules deliver ECC error correction and registered buffering for data integrity in enterprise environments.

DDR5 4800 Interface Limits

The DDR5 4800 standard (PC5-38400) sets the maximum transfer rate and timing envelope these modules operate within. CAS latency is fixed at CL40 and voltage at 1.10V, so performance cannot exceed the JEDEC baseline for this speed grade. Registered signalling adds a cycle of command delay compared to unbuffered designs.

Pre-Installation Checks

Verify that your motherboard supports 288-pin DDR5 RDIMMs with 2Rx4 organisation and can address the full 512GB capacity across all populated slots. Confirm the system BIOS is current enough to initialise sixteen registered modules at the rated speed. Buyers needing unbuffered UDIMMs or a lower total capacity should select a different kit.

How it compares

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

Price $15,075.99
Pricier than about 92% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (16 × 32 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $29.45 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Series Server Memory
Model nameDell Compatible DDR5 ECC Registered RDIMM
Part numberMR38400-324K16
Total capacity512 GB (16 × 32 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
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Should I choose the 512GB kit with 16 modules of 32GB or a smaller capacity for my Dell PowerEdge R860?

The kit provides 512GB total using 16 modules of 32GB each; select it when your workload needs that full capacity and your server has enough DIMM slots to populate all 16 positions.

What does the DDR5 4800 CL40 rating deliver once the modules are installed in the server?

The modules run at 4800 MT/s with a CAS latency of 40 cycles, giving a PC5-38400 peak bandwidth that the memory controller will use for registered ECC workloads.

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

The 288-pin registered DDR5 form factor caps the kit at the JEDEC 4800 MT/s standard speed and 1.10V operation, so the server cannot exceed that data rate without overclocking support.

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