SK HYNIX HMCG78AGBRA188N Rdimm Memory 1X16GB 1RX8 PC5-5600B

( Brand: Sk Hynix ), ( Manufacturer Part Number: HMCG78AGBRA188N ), ( Form Factor: Rdimm ), ( Type: Gddr5 Sdram ), ( Total Capacity: 16 Gb ), ( Bus Speed: Pc5-5600b )

Review SK HYNIX 16gb 1x16gb Rdimm Memory

The **SK Hynix HMCG78AGBRA188N 1x16GB 1Rx8 PC5-5600B RDIMM** is a high-performance, enterprise-grade memory module designed to deliver exceptional speed, reliability, and scalability for demanding server and workstation applications. Engineered with SK Hynix s advanced **16Gb DDR5 DRAM chips**, this **16GB single-rank (1Rx8) RDIMM** module operates at an aggressive **PC5-5600B (DDR5-5600)** speed, providing a **5600 MT/s** data transfer rate for blazing-fast data processing. The **B (B-die) variant** ensures compatibility with a wide range of modern server platforms, including Intel Xeon and AMD EPYC-based systems, while the **RDIMM (Registered DIMM)** architecture enhances signal integrity and reduces power consumption in high-channel-count configurations.

Built with **SK Hynix s cutting-edge DDR5 technology**, this module features **low-power, high-density DRAM chips** that optimize energy efficiency without compromising performance. The **16GB capacity** strikes a balance between cost-effectiveness and high-performance workloads, making it an ideal choice for virtualization, database management, AI/ML inference, and high-throughput computing environments. The **single-rank design** simplifies installation and reduces latency compared to multi-rank alternatives, while the **1Rx8 configuration** ensures seamless integration into systems with a single memory channel per DIMM slot.

For enterprise deployments, the **RDIMM architecture** provides built-in registration circuitry, which stabilizes signal integrity across long memory buses critical for systems with multiple DIMMs. This module also supports **ECC (Error-Correcting Code) functionality**, ensuring data integrity in mission-critical applications where uptime and accuracy are paramount. The **PC5-5600B specification** is optimized for next-generation CPUs, offering a competitive edge in latency-sensitive workloads while maintaining backward compatibility with modern server platforms.

SK Hynix s rigorous quality control ensures **long-term reliability**, making this module suitable for 24/7 operations in data centers, cloud infrastructure, and high-performance computing clusters. Whether deployed in **Intel Xeon Scalable, AMD EPYC, or other enterprise-grade servers**, this **16GB DDR5-5600B RDIMM** delivers a robust combination of speed, efficiency, and scalability, making it a premium choice for professionals demanding peak performance in their computing environments.

### **Pros and Cons of SK Hynix HMCG78AGBRA188N (1x16GB 1Rx8 PC5-5600B RDIMM Memory)**

1. **High Performance (PC5-5600B DDR4-3600 CL24)**

- This module operates at **DDR4-3600** with a **CAS latency of 24**, which is competitive for gaming and productivity workloads. The "B" variant (PC5-5600B) indicates it is optimized for **Intel Xeon Scalable (SAPIC) and some high-end Xeon D platforms**, where memory bandwidth is critical.

2. **Registered DIMM (RDIMM) for Server/Workstation Use**

- RDIMMs are designed for **multi-socket servers, workstations, and high-end desktops** where stability and error correction (via ECC) are essential. They reduce signal integrity issues in long memory channels.

3. **Single-Rank (1Rx8) Configuration**

- A **single-rank design** reduces latency compared to dual-rank (2Rx8) modules, making it suitable for **single-socket systems** where lower latency is beneficial.

4. **Compatibility with Intel Xeon Scalable (SAPIC) and Some Xeon D Platforms**

- This module is **Intel-certified for SAPIC (Scalable Platform Intel Chipset) servers**, meaning it is optimized for **Intel Xeon Scalable (e.g., 62xx, 72xx, 82xx, 92xx) processors** in multi-socket configurations. It may also work in **Xeon D-1500/1600/1700 platforms** (e.g., Intel C621/C622 chipsets).

5. **Reliability for Enterprise/Workstation Use**

- RDIMMs are built for **24/7 operation** in servers, making them more durable than consumer memory in demanding environments.

6. **Potential for Overclocking (If Supported by Platform)**

- While not officially overclockable, some **high-end Xeon D or workstation motherboards** may allow slight frequency adjustments, though this is rare.

---

1. **Expensive Compared to Consumer Memory**

- RDIMMs are **significantly pricier** than standard DDR4-3600 CL16/CL18 consumer memory. The **16GB single-rank RDIMM** will cost **far more** than a comparable 16GB CL16/CL18 module, making it impractical for most consumers.

2. **Limited Consumer Platform Support**

- This module is **not designed for mainstream consumer motherboards** (e.g., Intel Z690, B660, AMD X570). It is **exclusively for Intel Xeon Scalable (SAPIC) or Xeon D platforms**, which are rare outside enterprise/workstation environments.

- Attempting to use it in a **consumer system** may result in **no boot, instability, or failure to recognize the module**.

3. **Overkill for Most Users**

- Unless you are running a **multi-socket server, high-end workstation, or a Xeon D-based system**, this memory is **unnecessarily expensive and underutilized**.

- For **gaming or single-socket workstations**, **low-latency CL16/CL18 DDR4-3600/4000 modules** are far more cost-effective.

4. **No ECC Option for Consumer Use**

- While RDIMMs are **ECC-capable**, this specific part is **not explicitly marketed as ECC** (though most RDIMMs are). If you need **error correction**, you must confirm with the manufacturer or platform documentation.

5. **Single-Rank Latency Trade-off**

- While **1Rx8 modules have lower latency than 2Rx8**, they also have **less bandwidth per DIMM**. In a **multi-socket system**, this may not be a major issue, but in a **single-socket Xeon D**, the performance gain is minimal compared to a well-timed CL16/CL18 module.

6. **Potential for Future Obsolescence**

- DDR4 is **phasing out** in favor of DDR5. While this module will work for years, **long-term upgrades** may require switching to DDR5 RDIMMs, which will be even more expensive.

---

### **Conclusion & Recommendation**

#### **Who Should Buy This?**

- **Enterprise/Server Users** running **Intel Xeon Scalable (SAPIC) multi-socket systems** (e.g., 2P/4P servers).

- **High-end workstation users** with **Xeon D-1500/1600/1700 processors** (e.g., Intel C621/C622 chipsets) where **registered memory and stability** are required.

- **Users needing maximum bandwidth** in **memory-intensive applications** (e.g., virtualization, database servers, AI workloads).

#### **Who Should Avoid This?**

- **Gamers or general consumers** **Consumer DDR4-3600/4000 CL16/CL18 modules** (e.g., Corsair Vengeance, G.Skill Trident Z) offer **better performance per dollar**.

- **AMD Ryzen Threadripper or EPYC users** These platforms require **RDIMMs for multi-socket**, but **DDR4-3600/4000 CL16/CL18** is sufficient for single-socket systems.

- **Budget-conscious buyers** The **price premium** for RDIMMs is not justified unless you have a **compatible high-end platform**.

- **If you have an Intel Xeon Scalable (SAPIC) or Xeon D platform**, this module is a **solid choice** for **high-performance, stable memory**.

- **If you are a consumer or using a mainstream platform**, **stick with a well-timed DDR4-3600/4000 CL16/CL18 module** (e.g., **G.Skill Flare X, Corsair Dominator Platinum, or Kingston Fury Renegade**).

- **For AMD Threadripper or EPYC**, **DDR4-3600/4000 RDIMMs (if multi-socket) or low-latency CL16/CL18 (single-socket)** are better alternatives.

- **G.Skill Flare X F4-3600C16D-16GTZN** (16GB DDR4-3600 CL16, single-rank, non-RDIMM, much cheaper)

- **Corsair Vengeance LPX 16GB DDR4-3600 CL18** (budget-friendly, reliable)

This SK Hynix RDIMM is **niche and expensive**, making it **only worthwhile for very specific high-end professional use cases**.

Details:

So buy with us and use our friendly, experienced quality driven team to assist serve you in an IT world. Contiguous US only. Cloud storage Corp 2020.: HYNIX 16GB 1x16GB 1Rx8 PC5-5600B RDIMM MEMORY.

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part #: hmcg78agbra188n prices

• $174.99-$449.99

specifications servermemor:

• brand: Sk Hynix
• mpn: Hmcg78agbra188n
• form factor: Rdimm
• type: Gddr5 Sdram
• total capacity: 16 Gb
• bus speed: Pc5-5600b

returns servermemor:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted
• method: Money back

shipping servermemor:

• class: Economy
• type: Fixed
• cost: $0.00
• service: Economy
• transit: 3-5 Days

payments servermemor:

• other
• wallet: Paypal
• credit card: Visa

general servermemor:

• Enterprise Networking, Servers > Server Components > Server Memory RAM
• condition: Used

offer servermemor:

• best offers: True
• availability: In Stock
• quantity: 10
• started: June 1, 2026
• options: Ship-to-home
• sold: 0

seller servermemor:

• city: Hays, Kansas
• # reviews: 24662
• rating: 99.9%

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