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Green 288-pin DDR5 RDIMM module with black chips, no heat spreader

NEMIX RAM

NEMIX RAM RS700A-E12-RS12U 64GB DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-QZR3-JYD07 MPN RS700A-E12-RS12U

64GB DDR5 4800 ECC registered RDIMM validated for ASUS RS700A-E12-RS12U 1U dual-processor servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64GB capacity expands server memory for heavy workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design protects data integrity in mission-critical systems
  • 1V operation reduces power draw per module
  • Validated for ASUS RS700A-E12-RS12U 1U dual-processor servers

Compatibility

This 64GB DDR5 module is built for the ASUS RS700A-E12-RS12U 1U dual-processor server. It delivers registered ECC operation at 4800MT/s with a CL40 latency profile. The 2Rx4 organisation and 1.10V voltage match the platform's qualified memory list. IT teams can install it as a single 64GB upgrade without mixing ranks.

Thermals

The module runs at the standard DDR5 1.10V level and carries no heat spreader. In a 1U chassis the registered buffer and ECC logic add minimal overhead to the DIMM's power draw. Airflow from the server's front-to-rear fans is sufficient to keep the DRAM within specification during normal multi-threaded workloads.

Sustained load

Under continuous database or virtualization traffic the registered interface maintains signal integrity across both ranks. ECC corrects single-bit errors on the fly, preventing silent data corruption during long compute runs. The 4800MT/s data rate and CL40 timing remain stable without throttling when all DIMM slots are populated.

How it compares

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

Price $1,651.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $25.81 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 lineASUS Server Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-924K1
Total capacity64 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 systemsASUS
In the box
Included items64 GB (1 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install this 288-Pin DDR5 RDIMM into the ASUS RS700A-E12-RS12U server, and which step is commonly missed?

Power down the server, open the chassis, align the notch on the 288-pin module with the slot key, press firmly until both retention clips click, then verify in BIOS that the 64GB module registers at 4800MT/s with ECC active; the step often missed is confirming the registered ECC mode is enabled in firmware.

What maintenance or replacement will this 1.10V 2Rx4 ECC module need over its service life?

No scheduled maintenance is required; the module has no heat spreader and runs at 1.10V, so keep server airflow clean and monitor ECC corrected-error counters — replace the DIMM only if uncorrectable errors appear or capacity must increase beyond 64GB.

What limit appears first when this CL40 registered memory runs sustained workloads?

The CAS latency of CL40 at 4800MT/s sets the timing ceiling; under continuous load the memory controller will hit latency-bound throughput before thermal or voltage limits become a factor.

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