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Green DDR5 ECC RDIMM module with black chips and gold contacts

A-Tech

A-Tech 64GB DDR5 4800 ECC RDIMM 2Rx4 for Dell SNPJ52K5C/64G AC239379 Server Memory

SKU CH-T7H0-NFCY4

64 GB DDR5 4800 ECC registered server DIMM with CL40 latency and 1.1 V operation

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB capacity supports heavy server workloads
  • DDR5 4800 MHz speed enables fast data throughput
  • ECC RDIMM with 2Rx4 rank provides error correction and signal integrity
  • 1 V standard voltage ensures efficient power use
  • 288-pin DIMM form factor fits compatible Dell server slots

Server Memory Upgrade

The A-Tech 64GB DDR5 4800 ECC RDIMM module is designed as a compatible replacement for Dell part numbers SNPJ52K5C/64G and AC239379. It targets administrators upgrading server or workstation platforms that require registered error-correcting memory. The single 64GB stick uses a 288-pin DIMM form factor and operates at the standard DDR5 voltage of 1.10V.

Thermals and Power Draw

Running at 4800 MT/s with a CAS latency of CL40, the module draws 1.10V in line with the DDR5 baseline. Registered buffering reduces electrical load on the memory controller, helping maintain stable thermals inside densely populated chassis. No active cooling is present on the module itself, so airflow across the DIMM slots handles heat dissipation during normal operation.

Sustained Load Behaviour

Under continuous workloads, the registered design and on-die ECC maintain data integrity while the major-brand chipset sustains rated frequency. The 2Rx4 organization (EC8) distributes access across ranks to support consistent throughput. Buyers needing capacities beyond a single 64GB module or systems requiring unbuffered DIMMs should verify platform specifications before ordering.

How it compares

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

Price $1,815.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $28.37 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Dell
Model nameSNPJ52K5C/64G, AC239379
Total capacity64 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4 (EC8)
Power
Rated voltage1.1 V

Questions about this item

How do I install this 288-pin DDR5 RDIMM in my Dell server, and what step is often missed?

Power down and unplug the server, open the chassis, align the notch on the 288-pin module with the slot key, press firmly until both ejector tabs click locked, then power on and verify 64GB appears in BIOS or system firmware — the step often missed is confirming the module is fully seated by the audible click of both tabs.

What maintenance or replacement will this ECC RDIMM need over its service life?

No scheduled maintenance is required for the module itself; keep server air intakes clean so the 1.10V DDR5 memory stays within thermal limits, and replace only if system logs report correctable ECC errors rising or a DIMM fails POST — the registered design and major-brand chipset are built for continuous server operation.

What limit appears first when this 4800MHz CL40 module runs sustained workloads?

The DDR5 4800 MT/s data rate and CL40 latency set the bandwidth and response ceiling; under sustained load the memory controller will hit its maximum throughput before the 1.10V RDIMM reaches any thermal or voltage limit, so total throughput caps at the rated PC5-38400 speed.

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