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In Stock — 14 availableFactory Sealed

HMCG88AEBRA107N AA

32GB DDR5-4800 RDIMM 2RX8 1.1V

On Hand
14
Incoming
0
Condition
F/S
TAA
No

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The SK hynix HMCG88AEBRA107N is a 32GB DDR5-4800 dual-rank (2Rx8) Registered DIMM (RDIMM) engineered for enterprise-grade server workloads. Operating at an energy-efficient 1.1V, this module provides superior bandwidth, improved channel efficiency, and comprehensive data integrity for modern data center architectures.

Technical Specifications

Capacity
32GB
Memory Type
DDR5 SDRAM
Speed
DDR5-4800 (PC5-38400)
Form Factor
RDIMM
Rank / Organization
2Rx8
Voltage
1.1V
ECC
ECC (Sideband + On-Die ECC)
Registered / Buffered
Registered
DRAM Die Density
16Gb
Chip Organization
x8
CAS Latency
CL40
Pin Count
288-pin
Manufacturer
SK hynix

Module Architecture

The HMCG88AEBRA107N is built on SK hynix's 16Gb A-die DDR5 DRAM technology, structured in a dual-rank, x8 organization (2Rx8). Unlike DDR4, DDR5 RDIMMs utilize a dual independent 32-bit subchannel architecture (40 bits total per subchannel including sideband ECC), significantly improving memory access concurrency and bus efficiency. The module integrates an onboard Registering Clock Driver (RCD) to buffer command/address signals, an onboard Power Management IC (PMIC) to handle local 1.1V VDD/VDDQ voltage regulation, and an SPD Hub with integrated thermal sensing. In addition to system-level sideband ECC, on-die ECC is natively implemented on each DRAM component to correct internal bit-level faults before data exits the chip.

Decoding the SK hynix part number HMCG88AEBRA107N: 'HMCG' identifies an enterprise DDR5 RDIMM; '88' designates a 32GB capacity featuring a 2Rx8 layout; 'A' denotes the DRAM die revision (A-die); 'EB' defines the FBGA package and x8 component configuration; 'R' specifies a registered module type; and '107' specifies the DDR5-4800 speed bin with standard JEDEC timing parameters (CL40).

Typical Compatible Platforms

4th Gen Intel Xeon Scalable Processors (Sapphire Rapids)5th Gen Intel Xeon Scalable Processors (Emerald Rapids)AMD EPYC 9004 Series Processors (Genoa / Bergamo / Siena)Dell PowerEdge 16G Servers (R660, R760, R760xa)HPE ProLiant Gen11 Servers (DL360 Gen11, DL380 Gen11)Lenovo ThinkSystem V3 Servers (SR630 V3, SR650 V3)Supermicro X13 and H13 Enterprise Platforms

Always verify against your server's qualified vendor list (QVL).

HMCG88AEBRA107N AA FAQ

Can this DDR5-4800 RDIMM be installed in a DDR4 server platform?

No. DDR5 RDIMMs have a different pinout, notch location, signal architecture, and voltage profile compared to DDR4, making them physically and electrically incompatible with DDR4 slots.

What advantages does the on-module PMIC provide over previous DDR generations?

DDR5 moves power management from the motherboard directly onto the module via an integrated PMIC. This provides tighter voltage regulation, lower power distribution losses, reduced motherboard circuit complexity, and superior power efficiency at 1.1V.

Can 2Rx8 modules be mixed with 1Rx4 or 2Rx4 modules in the same server?

While modern server memory controllers may support population across different channels, mixing x8 and x4 DRAM configurations within the same memory channel is not supported by JEDEC and OEM platform guidelines as it disrupts ECC handling and channel balancing.

About HMCG88AEBRA107N AA

The HMCG88AEBRA107N AA is a enterprise server memory module (32GB DDR5-4800 RDIMM 2RX8 1.1V). Sold as factory-sealed OEM stock with a 1-year warranty and same-day US shipping when in stock. We stock 14 units of this SKU today.

Compatible with enterprise servers requiring this exact configuration. Bulk orders welcome — quotes typically returned within one business hour. Payment terms: NET-30 for approved accounts, or instant on-chain payment via USDC/ETH on Base or Ethereum for autonomous AI agents and Web3 buyers.

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