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Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 CL40 2Rx4 1.1V ECC RDIMM memory upgrade RS520A-E12-RS24U

SKU CH-PMAA-AAH32 MPN RS520A-E12-RS24U

ECC registered DDR5 kit provides 128GB across two 64GB modules at 4800MHz CL40 for compatible ASUS servers

  • Capacity128GB (2 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128GB kit in two 64GB modules for high server capacity
  • DDR5 4800 speed with PC5-38400 bandwidth for fast data throughput
  • CL40 CAS latency at 1.1V for efficient registered operation
  • ECC RDIMM with 2Rx4 rank for error-correcting reliability
  • Validated for ASUS RS520A-E12-RS24U 2U server compatibility

Compatibility & Capacity

This 128 GB kit contains two 64 GB DDR5 modules built for the ASUS RS520A-E12-RS24U server. ECC registered RDIMM design adds error correction and signal buffering for stable operation under heavy workloads.

Suited Builds & Limits

Ideal for administrators expanding memory in the named ASUS 2U platform where registered ECC DDR5 is required. Not suited for consumer desktop boards, laptops, or any system that accepts only unbuffered non-ECC memory.

Deciding Specification

Registered ECC RDIMM layout with CL40 timing at 4800 MT/s and 1.10 V determines fit; the motherboard must support DDR5 registered ECC DIMMs or the modules will not function.

Highlights

  • 128GB kit in two 64GB modules for high server capacity
  • DDR5 4800 speed with PC5-38400 bandwidth for fast data throughput
  • CL40 CAS latency at 1.1V for efficient registered operation
  • ECC RDIMM with 2Rx4 rank for error-correcting reliability
  • Validated for ASUS RS520A-E12-RS24U 2U server compatibility

Specifications

BrandNEMIX RAM
SeriesASUS Server Motherboard Compatible Series Memory
ModelASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K2
Capacity128GB (2 x 64GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASUS
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank2Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content128GB (2X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What CAS latency does the DDR5 4800 kit run at under sustained load?

The modules operate at CL40 timings at the rated DDR5 4800 speed.

How much heat do the 64 GB registered DIMMs produce when the server runs all day?

The kit has no heat spreader and runs at the standard DDR5 1.1 V, so thermal output stays within normal registered DIMM limits.

Which ASUS server motherboard must already be installed for this memory kit to function?

The kit is validated for the ASUS RS520A-E12-RS24U single-socket 2U server.

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