HYNIX HMCG78MEBRX002 Rdimm Ecc Ram DDR5 PC5-4800 1RX8 288 4800R

( Brand: Hynix ), ( Manufacturer Part Number: HMCG78MEBRX002 ), ( Form Factor: Rdimm ), ( Type: Ecc Ram ), ( Total Capacity: 16 Gb ), ( Number Of Pins: 288 ), ( Bus Speed: Pc5-38400 ), ( Memory Features: Ecc Memory, Registered )

Review HYNIX Read 16gb Rdimm 288 Ecc Reg Ram

The **Hynix HMCG78MEBRX002 DDR5 RDIMM** is a high-performance, enterprise-grade memory module designed to deliver exceptional speed, reliability, and scalability for data-intensive workloads in modern server environments. Part of Hynix s cutting-edge **DDR5 RDIMM (Registered Dual In-Line Memory Module)** lineup, this 1Rx8 configuration offers a robust solution for high-end servers, workstations, and clustered computing systems where memory bandwidth, latency, and error correction are critical. With a **PC5-4800** (DDR5-4800) speed rating, this module achieves a robust **4,800 MT/s** data transfer rate, enabling near-instantaneous data access and significantly enhancing system responsiveness for applications such as virtualization, database management, AI/ML processing, and high-performance computing (HPC). The **ECC (Error-Correcting Code)** functionality ensures data integrity by detecting and correcting single-bit errors on the fly, making it an ideal choice for mission-critical environments where uptime and accuracy are non-negotiable.

Built with **registered memory technology**, the HMCG78MEBRX002 incorporates a **buffered interface** that mitigates signal integrity issues on longer memory buses, reducing the risk of data corruption and improving overall system stability particularly in multi-socket configurations. The **288-pin DIMM form factor** adheres to industry-standard specifications, ensuring seamless compatibility with a wide range of **Intel Xeon (Sapphire Rapids, Emerald Rapids, and earlier generations)** and **AMD EPYC (Rome, Milan, and Genoa)** processors, as well as compatible server platforms from major vendors like Dell EMC, HPE, Lenovo, and Supermicro. This module supports **288GB of total capacity per DIMM slot** when paired with a **1Rx8 configuration**, leveraging eight 32GB DRAM chips per rank to maximize memory density without compromising performance.

Designed with **low-power efficiency in mind**, the HMCG78MEBRX002 incorporates advanced **HBM (Hybrid Buffer Module)** technology, which optimizes power delivery and reduces heat generation compared to traditional DDR5 modules. This not only extends the lifespan of the memory module but also contributes to lower operational costs in data centers by improving energy efficiency. The **registered (REG) variant** further enhances reliability by buffering commands and addresses, reducing the load on the memory controller and minimizing latency spikes in high-channel-count systems. Additionally, the module is engineered with **high-quality Hynix DRAM chips**, which undergo rigorous testing for performance consistency, ensuring sustained peak speeds and reduced latency under sustained workloads.

For administrators and IT professionals, the HMCG78MEBRX002 offers **future-proofing capabilities**, supporting **DDR5.1 and beyond** features as they become standardized, while maintaining backward compatibility with existing server architectures. Its **288-pin design** and **RDIMM configuration** make it a versatile upgrade option for servers requiring **high-bandwidth memory subsystems**, such as those running **Microsoft SQL Server, Oracle Database, SAP HANA, or VMware ESXi** environments. Whether deployed in a **2U rack server, blade system, or high-density cluster**, this memory module ensures that demanding applications run smoothly, with minimal latency and maximum throughput. With its blend of **speed, error correction, and enterprise-grade reliability**, the Hynix HMCG78MEBRX002 stands as a premium choice for organizations prioritizing performance, scalability, and data protection in their infrastructure.

### **Pros and Cons of Hynix HMCG78MEBRX002 (DDR5 PC5-4800 RDIMM 1Rx8 288 ECC Reg RAM)**

1. **High Performance for Server/Workstation Use** DDR5-4800 speed is optimized for modern CPUs (e.g., Intel Xeon, AMD EPYC, or high-end desktop platforms like Intel 13th/14th Gen with appropriate chipsets). This ensures lower latency and higher throughput compared to slower DDR4 or lower-speed DDR5 modules.

2. **Registered (RDIMM) Design** RDIMMs are designed for multi-socket servers and workstations, reducing bus contention and improving stability in high-channel-count systems. They also help mitigate signal integrity issues in longer memory traces.

3. **ECC (Error-Correcting Code) Support** ECC memory is critical for data integrity in servers, workstations, and applications requiring reliability (e.g., databases, virtualization, AI/ML workloads). It automatically corrects single-bit errors and detects multi-bit errors, reducing downtime and data corruption risks.

4. **Dual-Channel (1Rx8) Configuration** The 1Rx8 configuration (single-rank, eight-channel) balances performance and capacity. It provides better bandwidth than single-channel but avoids the latency penalties of multi-rank modules in some workloads.

5. **Compatibility with Modern Platforms** DDR5-4800 is well-supported on Intel Xeon (e.g., Sapphire Rapids, Emerald Rapids) and AMD EPYC (e.g., Milan, Genoa) systems. It also works with some high-end desktop motherboards (e.g., Intel Z790, ASUS ROG Maximus, MSI MEG) that support DDR5-4800 speeds.

6. **Scalability for Large Systems** RDIMMs are ideal for systems requiring 128GB of RAM (e.g., 4x 32GB modules). They are commonly used in enterprise and HPC environments where memory capacity is a priority.

7. **Future-Proofing** DDR5 is the current standard, and 4800MHz is a solid speed for workloads that benefit from higher memory bandwidth (e.g., gaming, content creation, or memory-intensive applications).

---

1. **Expensive Compared to DDR4 or Lower-Speed DDR5** DDR5 RDIMMs are significantly pricier than DDR4 modules or even non-RDIMM DDR5 kits. The cost per GB is higher, which may not be justified for budget-conscious builds or non-server use cases.

2. **Limited Desktop Compatibility** While some high-end desktop motherboards support DDR5-4800 RDIMMs, most consumer platforms (e.g., Intel B660, B760, or most AMD AM5 motherboards) do not. RDIMMs are primarily designed for server/workstation use, and mixing RDIMMs with LRDIMMs or UDIMMs in desktop systems can cause issues.

3. **Power Consumption** DDR5 modules consume more power than DDR4, and RDIMMs (especially in multi-socket systems) can increase overall system power draw. This may require additional cooling or power supply upgrades.

4. **Heat Generation** Higher speeds and registered designs can lead to increased heat output. Proper cooling (e.g., heatsinks, thermal paste) is essential to maintain performance and longevity.

5. **Overkill for Consumer Use** If you re building a gaming PC or a general-purpose workstation, DDR5-4800 RDIMMs may be unnecessary. Lower-speed DDR5 (e.g., 4000MHz) or non-RDIMM modules could suffice while saving costs.

6. **Potential for Overprovisioning** If your workload doesn t heavily utilize memory bandwidth (e.g., CPU-bound tasks), the performance gains from DDR5-4800 may not be noticeable. Benchmarking your specific use case is advisable.

7. **Vendor Lock-In Risks** Some server platforms (e.g., certain Intel Xeon or AMD EPYC systems) may have strict memory compatibility requirements. Always verify compatibility with your motherboard/CPU before purchasing.

---

The **Hynix HMCG78MEBRX002 DDR5-4800 RDIMM 288 ECC Reg** is an excellent choice for **server, workstation, or high-end professional workloads** where reliability, scalability, and performance are critical. Its ECC protection, registered design, and high speed make it ideal for environments requiring data integrity and memory bandwidth (e.g., virtualization, databases, AI/ML, or HPC).

However, for **consumer desktop builds, gaming PCs, or budget-friendly setups**, this module is **overkill** and unnecessarily expensive. In such cases, lower-speed DDR5 (e.g., 4000MHz) or non-RDIMM modules would be more cost-effective.

- You are building a **server, workstation, or high-end professional system** (e.g., Intel Xeon, AMD EPYC, or compatible desktop platforms).

- You require **ECC memory for data integrity** (e.g., databases, virtualization, or mission-critical applications).

- Your workload **benefits from high memory bandwidth** (e.g., content creation, AI/ML, or memory-intensive software).

- You need **scalability with multiple RDIMMs** (e.g., 128GB configurations).

- You are building a **gaming PC, general-purpose desktop, or budget workstation**.

- Your platform **does not support RDIMMs** (check motherboard manual).

- You can achieve similar performance with **lower-cost DDR5 (non-RDIMM) or DDR4 modules**.

- Your use case does not require **ECC or high memory speeds**.

For most **consumer users**, prioritize **cost efficiency** and **platform compatibility** over raw speed. For **enterprise or professional users**, this module is a **strong, reliable choice** when used in the right environment.

Details:

16GB Hynix PC5-4800E RDIMM 288-pin ECC Memory RAM Module. CAS Latency 40. Please verify compatibility before placing an order. Memory Type: ECC.

Customer return; probably one of the memory chip is bad - for sale as-is, parts or repair. P/N: HMCG78MEBRX002 AA. DDR5 4800 PC5-38400. Registered: Yes.

part #: hmcg78mebrx002 prices

• $120.00-$949.00

specifications servermemor:

• brand: Hynix
• mpn: Hmcg78mebrx002
• form factor: Rdimm
• type: Ecc Ram
• total capacity: 16 Gb
• number of pins: 288
• bus speed: Pc5-38400
• memory features: Ecc Memory, Registered

general servermemor:

• condition: For parts or not working
• Enterprise Networking, Servers > Server Components > Server Memory RAM

returns servermemor:

• policy: No Returns

payments servermemor:

• credit card: Diners-club
• other
• wallet: Apple-pay

seller servermemor:

• city: San Francisco, California
• rating: 100.0%
• # reviews: 21353

shipping servermemor:

• type: Calculated
• carrier: USPS, FedEx
• service: USPS Priority Mail Flat Rate Envelope, USPS Priority Mail Express Flat Rate Envelope, FedEx Standard Overnight
• cost: $9.90
• class: Expedited, One-day
• transit: 3-7 Days

offer servermemor:

• availability: In Stock
• quantity: 3
• sold: 0
• started: March 30, 2026
• options: Ship-to-home

Hynix HMCG78MEBRX002 Is Similar To:

• 0.18813613984601152 Hynix Mhz Ecc Reg Ram Hp (31.4% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(May 16th, 2018)
• 0.43175616185203314 Lot Hynix Ecc Registered Server Ram (25.8% similar) I'll get back to you as soon I can. Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(March 9th, 2018)
• 0.7944198679996979 Lot Hynix Server Vlp Ram (25% similar) I'll get back to you as soon I can. Condition: used, working, pictured one but total 16 same if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(October 20th, 2018)
• 0.850481806304197 Lot Samsung Hynix Server Ecc Ram (28.3% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(October 16th, 2018)
• 0.9423117512608463 Hynix Mhz Ecc Reg Ram Hp (31.7% similar) I'll get back to you as soon I can. Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(May 19th, 2018)
• 011110226693 Hynix 2gb Pc5300 Ecc (34.5% similar) We either re-use, refurbish, re-sell or properly recycle your outdated it equipment. Need product support. Byte has you covered...(May 27th, 2017)
• 011110228963 Hynix 4gb Pc5300 Ecc (32.7% similar) Need product support. Byte has you covered. We either re-use, refurbish, re-sell or properly recycle your outdated it equipment...(April 25th, 2017)
• 011110232700 Hynix 4gb Pc8500-1066mhz Reg (32.2% similar) Need product support. Byte has you covered. We either re-use, refurbish, re-sell or properly recycle your outdated it equipment...(April 11th, 2017)
• 011110345905 Hynix Ram 32gb Ddr4 (29.4% similar) Need product support. Byte has you covered. We either re-use, refurbish, re-sell or properly recycle your outdated it equipment...(May 3rd, 2017)
• 011110346568 Hynix Ram 8gb Ddr4 (29.6% similar) Need product support. Byte has you covered. We either re-use, refurbish, re-sell or properly recycle your outdated it equipment...(June 26th, 2017)
• 011110347893 Hynix Ram 32gb Ddr4 (29.4% similar) Need product support. Byte has you covered. We either re-use, refurbish, re-sell or properly recycle your outdated it equipment...(June 8th, 2017)