SK hynix HMCG88AEBRA173N 32GB DDR5-4800 ECC Registered RDIMM

Matching a server memory module involves more than finding the right capacity. The SK hynix HMCG88AEBRA173N combines 32GB of DDR5 memory with a registered ECC architecture and dual-rank x8 organization, giving technicians the key attributes needed for a supported replacement or expansion. It is intended for platforms that accept DDR5 RDIMMs, making it a practical option when increasing application memory while keeping the server's module type and population requirements in view.

Key Features

• Registered architecture fits server memory designs that require RDIMMs, helping distinguish this module from physically similar unbuffered desktop products.
• ECC capability supports error detection and correction in a compatible platform, an important consideration for business applications that depend on data integrity.
• A single-module format lets buyers choose the quantity needed for their channel layout rather than adapting a fixed kit to the system.
• Specified rank organization helps service teams match an existing installation and check the platform's supported memory combinations.
• Clearly identified timing and voltage provide useful matching criteria for a planned upgrade without relying on capacity and advertised speed alone.

Product Specifications

• Manufacturer: SK hynix
• Part Number: HMCG88AEBRA173N
• Product Category: Server memory
• Module Capacity: 32GB
• Module Configuration: 1 x 32GB
• Memory Technology: DDR5 SDRAM
• Rated Data Rate: 4800MT/s
• Speed Grade: DDR5-4800
• Bandwidth Classification: PC5-38400
• Form Factor: RDIMM
• Pin Count: 288
• Buffering: Registered
• Error Correction: ECC
• Rank Organization: 2Rx8
• Rank Count: Dual rank
• DRAM Device Width: x8
• CAS Latency: CL40
• Operating Voltage: 1.1V

Use Cases

• Increasing memory allocation for virtual machines on a supported server.
• Adding capacity for database working sets, application services, and concurrent business workloads.
• Replacing an existing module where the service configuration calls for this exact part number.
• Building out a compatible RDIMM workstation according to its supported memory population plan.

Compatibility

Requires a server or workstation with support for 32GB DDR5 ECC Registered RDIMMs in a 288-pin format and the specified rank organization. Confirm the motherboard and processor requirements, supported module list, and slot-population rules before installation. This module is not interchangeable with DDR4 DIMMs, DDR5 unbuffered DIMMs, or laptop SODIMMs.

Frequently Asked Questions

Will the system necessarily run this memory at 4800MT/s?

No. Operating speed depends on the processor, firmware, installed modules, and number of DIMMs populated per channel.

Can I choose memory by pin count alone?

No. Memory generation, registered or unbuffered architecture, ECC requirements, capacity, and rank support must also match the platform.

Should every available memory slot be filled?

Not automatically. Follow the system's installation sequence and channel-balancing guidance rather than filling slots without checking the recommended layout.

Does the ECC module work independently of the system?

No. ECC operation requires compatible processor, motherboard, and firmware support.

For a service replacement, matching the complete part number keeps the purchase tied to the intended module rather than a broadly similar specification. For an expansion, plan capacity across the available channels and compare the new module with the memory already installed. With those checks completed, this module provides a defined 32GB capacity increment for a supported DDR5 registered ECC system, helping accommodate growing workloads without changing the platform's memory architecture.