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Single green 288-pin DDR5 RDIMM module, black chips, gold contacts, 128GB label

A-Tech

A-Tech 128GB DDR5 4800 CL40 1.1V ECC Registered 288-Pin Server RAM

SKU CH-J4PR-KHNG3

A 128GB DDR5 registered ECC module running at 4800MHz with CL40 latency and 1.1V operation for server workloads

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity handles heavy server workloads
  • DDR5 4800 MT/s speed moves data quickly
  • CL40 latency keeps timing tight for stability
  • 1 V DDR5 standard voltage reduces power draw
  • Supermicro certified module ensures tested compatibility

128GB DDR5 4800 ECC RDIMM for servers

This module delivers 128GB of DDR5 4800 registered memory with CL40 latency and 1.1V operation. It uses a 2S2Rx4 quad-rank Hynix chipset and carries Supermicro certification for validated compatibility. The 288-pin RDIMM form factor fits server platforms that require registered ECC memory.

Suited for capacity-focused server builds

Administrators expanding memory density in Supermicro-qualified systems will match the certified part number exactly. The single-module design simplifies population rules for high-capacity configurations. Workstations or desktops that accept only unbuffered UDIMMs cannot use this registered module.

Quad-rank 2S2Rx4 registered architecture

The 4Rx4 organisation places four logical ranks behind the register, which the memory controller must support. Systems limited to dual-rank or single-rank DIMMs will not recognise the full capacity. Verify the platform qualified vendor list for this rank structure before purchase.

How it compares

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

Price $3,255.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $25.44 per GB
Pricier than about 87% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameSuperMicro
Product lineSupermicro Certified
Model nameMEM-DR512L-HL01-ER48
Total capacity128 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 EC8)
Power
Rated voltage1.1 V

Questions about this item

Should I pick the 128GB 4800MHz CL40 1.1V ECC Registered module or a different capacity for my Supermicro server?

This is a single 128GB DDR5 4800 (PC5-38400) RDIMM with CL40 latency and 1.1V operation, certified for Supermicro systems using the MEM-DR512L-HL01-ER48 part number.

What does the DDR5 4800 speed rating actually deliver once installed in a compatible server?

The module operates at 4800 MT/s with CL40 timing at the standard DDR5 voltage of 1.1V, providing registered ECC reliability for multi-socket workloads.

Is the 288-pin RDIMM interface the limiting factor for bandwidth compared to other DDR5 form factors?

The 288-pin RDIMM form factor carries the DDR5 4800 signal with registered buffering and 4Rx4 rank organisation, matching the Supermicro certified specification.

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