SK HYNIX HMCG94MEBRA108N Server Ecc Memory Rdimm 64GB 2RX4 PC5-4800B-RA0-09 DDR5

( Brand: Sk Hynix ), ( Manufacturer Part Number: HMCG94MEBRA108N ), ( Part Type: Memory Server )

Review SK HYNIX 2rx4 Server Ecc Memory Rdimm

The **SK Hynix HMCG94MEBRA108N 64GB 2Rx4 PC5-4800B-RA0-09 Server ECC Memory (DDR5 RDIMM)** represents the pinnacle of high-performance, enterprise-grade memory designed to meet the demanding workloads of modern data centers, cloud computing environments, and high-end server applications. Engineered with precision by SK Hynix, a global leader in memory technology, this module delivers uncompromising reliability, scalability, and efficiency, making it an ideal choice for mission-critical infrastructure where speed, stability, and low-latency performance are paramount. Built to the **DDR5 RDIMM (Registered DIMM)** standard, this 64GB module features a **2-rank (2Rx4) configuration**, which optimizes data throughput and reduces power consumption while maintaining robust error correction capabilities through **ECC (Error-Correcting Code)** technology. The **PC5-4800B** specification indicates a **4800MHz** operational frequency, enabling near-lightning-fast data transfer rates of **38.4 GT/s (Giga Transfers per Second)**, significantly enhancing system responsiveness in CPU-bound and memory-intensive tasks such as virtualization, high-frequency trading, AI/ML workloads, and large-scale database operations. The **RA0-09** timing profile ensures compatibility with a wide range of server platforms while maximizing performance, balancing speed with stability to prevent data corruption and system crashes under heavy loads.

Crafted with **SK Hynix s advanced 16Gb (256Mb) DDR5 DRAM chips**, this module leverages cutting-edge manufacturing processes to achieve superior density, power efficiency, and signal integrity. The **2Rx4 architecture** distributes data across two ranks, allowing for parallel data access that minimizes bottlenecks and enhances overall system bandwidth, particularly in multi-socket servers where memory latency can become a critical performance bottleneck. The **registered DIMM design** further mitigates signal integrity issues over longer memory channels, making this module well-suited for high-end servers with extended memory configurations. Additionally, the **ECC functionality** provides an extra layer of protection against silent data corruption, a critical feature for environments where data integrity is non-negotiable, such as financial systems, healthcare databases, and enterprise resource planning (ERP) solutions.

Beyond raw performance, this memory module is built with **enterprise-grade durability**, featuring robust thermal management and extended operational lifespans to withstand the rigors of 24/7 server environments. The **low-power consumption** of DDR5 technology, combined with SK Hynix s optimized power delivery, helps reduce operational costs and heat generation, contributing to a more sustainable and energy-efficient data center. The module s **compatibility with a broad range of server platforms**, including those from Dell EMC, HPE, Lenovo, and other leading manufacturers, ensures seamless integration into existing infrastructure without requiring costly upgrades or modifications. Whether deployed in a **single-socket workstation** or a **multi-terabyte-scale server cluster**, this 64GB DDR5 RDIMM module delivers the speed, reliability, and scalability required to power the next generation of high-performance computing applications. For organizations prioritizing performance, security, and future-proofing, the **SK Hynix HMCG94MEBRA108N** stands as a cornerstone of next-gen server memory solutions.

### **Pros and Cons of SK Hynix HMCG94MEBRA108N (64GB 2Rx4 DDR5 RDIMM ECC Memory)**

1. **High Performance** DDR5-4800 (PC5-4800) offers faster data transfer speeds compared to DDR4, improving system responsiveness and workload efficiency, especially in memory-intensive applications like databases, virtualization, and AI workloads.

2. **Error Correction (ECC)** Built-in ECC memory helps prevent data corruption from hardware failures, making it ideal for servers, workstations, and mission-critical systems where data integrity is essential.

3. **Registered DIMM (RDIMM) Design** RDIMMs are optimized for multi-socket servers, reducing signal integrity issues and improving stability in high-channel configurations. They also support higher memory capacities per DIMM slot.

4. **Dual Rank (2Rx4) Configuration** The 2-rank design provides a balance between speed and capacity, allowing for better bandwidth utilization without excessive latency spikes compared to single-rank modules.

5. **Compatibility with Modern Servers** DDR5 RDIMM modules are designed for newer server platforms (e.g., Intel Xeon, AMD EPYC, and other enterprise-grade CPUs), ensuring long-term compatibility with future-proofing in mind.

6. **Reliability for Enterprise Use** SK Hynix is a reputable manufacturer with a strong track record in memory production, offering consistent quality and durability in demanding environments.

7. **Scalability** 64GB modules allow for efficient scaling in multi-socket servers, reducing the number of DIMMs needed to reach high memory capacities (e.g., 1TB in a 2-socket system).

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1. **Higher Cost** DDR5 RDIMM modules are significantly more expensive than DDR4 alternatives, especially for high-capacity configurations. This can increase the total cost of ownership (TCO) for server deployments.

2. **Power Consumption** DDR5 modules generally draw more power than DDR4, which may lead to higher cooling requirements and increased operational costs in data centers.

3. **Limited Availability of DDR5 RDIMM Options** Compared to DDR4, the selection of DDR5 RDIMM modules is still growing, and some server platforms may have limited compatibility or require specific SKUs.

4. **Heat Generation** Higher speeds and power draw can result in increased heat output, potentially requiring more robust cooling solutions in dense server environments.

5. **Migration Complexity** Upgrading from DDR4 to DDR5 may require replacing the entire memory subsystem, including the motherboard or server platform, which can be costly and disruptive for existing infrastructure.

6. **Potential Latency in Some Workloads** While DDR5 offers higher bandwidth, certain latency-sensitive applications (e.g., some real-time processing tasks) may not see proportional improvements, depending on the CPU and workload optimization.

7. **Firmware and BIOS Dependencies** Some DDR5 modules require updated server firmware or BIOS to function optimally, which may introduce compatibility risks if not properly tested.

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The **SK Hynix HMCG94MEBRA108N (64GB DDR5-4800 RDIMM ECC)** is an excellent choice for **high-performance server workloads** where memory bandwidth, reliability, and scalability are critical. Its DDR5 speed, ECC protection, and RDIMM design make it well-suited for modern enterprise environments, particularly in scenarios involving virtualization, databases, or AI/ML workloads.

However, the **higher cost, power consumption, and potential migration challenges** must be carefully considered, especially for budget-conscious deployments or legacy systems. If your server platform supports DDR5 and you prioritize performance and future-proofing, this module is a strong recommendation. For cost-sensitive or less demanding workloads, DDR4 alternatives may still offer a more economical solution.

- You are deploying a **new DDR5-compatible server** (e.g., Intel Xeon Sapphire Rapids, AMD EPYC Genoa/Milan, or other enterprise-grade platforms).

- Your workloads are **memory-intensive** (e.g., virtualization, databases, AI, or high-performance computing).

- You require **ECC protection** for data integrity.

- You plan to **scale memory capacity** efficiently in a multi-socket system.

- Your budget is constrained, and **DDR4 modules** are sufficient for your workload.

- You are upgrading an **existing DDR4 server**, as a full memory subsystem replacement may not be cost-effective.

- Your workloads are **not heavily memory-bound**, and lower-speed DDR5 modules (e.g., DDR5-4000) would suffice.

For most **enterprise-grade server deployments** where performance and reliability are paramount, this SK Hynix module is a **solid and recommended choice**.

Details:

Model: HMCG94MEBRA108N. Condition: Used. Specifications. Error Correction: ECC Registered.

Capacity: 64GB. Comes in non-original packaging. SK Hynix 64GB HMCG94MEBRA108N 2Rx4 PC5-4800B-RA0-09 Server ECC Memory DDR5 RDIMM. Manufacturer:SK Hynix.

PC5-4800B-RA0-09 Server Memory Module. This item is guaranteed to be as described. Notes: This memory module has been tested and verified, was carefully inspected with a magnifier for flaws or missing components. Cosmetic appearance may vary slightly from pictured unit.

This memory module has some minor markings from normal use, along with residual adhesive its previous application, and shows no major or obvious defects that would affect functionality.

part #: hmcg94mebra108n prices

• $159.00-$499.97

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• brand: Sk Hynix
• mpn: Hmcg94mebra108n
• part type: Memory Server

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• started: March 11, 2026

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