SAMSUNG M39A2G40DB0-CPB Ecc Rdimm DDR4 2RX4 PC4 2133

( Brand: Samsung ), ( Manufacturer Part Number: M39A2G40DB0-CPB ), ( Type: Ddr4 Sdram ), ( Memory Features: Ecc Memory ), ( Form Factor: Rdimm ), ( Capacity Per Module: 16 Gb ), ( Number Of Pins: 288 ), ( Country Of Origin: China )

Review SAMSUNG 16gb Ddr4 Ecc Rdimm 2rx4 Pc4 As is

The **Samsung M39A2G40DB0-CPB DDR4 ECC RDIMM 2Rx4 PC4-2133** is a high-performance, enterprise-grade memory module designed to deliver reliable, high-speed data processing for demanding server, workstation, and data center applications. Part of Samsung s trusted line of **DDR4 Registered DIMMs (RDIMMs)**, this module is engineered to meet the rigorous demands of modern computing environments where stability, scalability, and low-latency performance are critical. With a **2133 MHz** clock speed, it operates at the **PC4-2133** speed rating, providing a robust throughput of **21.3 GB/s per module**, making it ideal for workloads that require sustained, high-bandwidth data transfers such as virtualization, database management, high-performance computing (HPC), and AI/ML processing. The **ECC (Error-Correcting Code)** functionality ensures data integrity by automatically detecting and correcting single-bit errors, reducing the risk of system crashes, data corruption, and downtime in mission-critical operations.

As a **2Rx4 configuration**, this RDIMM features **four ranks of memory**, allowing for deeper memory stacks that enhance performance in multi-channel systems while maintaining compatibility with most modern server platforms. The **registered design** of this DIMM helps mitigate signal integrity issues in longer memory channels, making it particularly well-suited for systems with extensive memory configurations or those utilizing high-speed memory buses. Built with Samsung s proprietary **96-layer 16Gb DDR4 DRAM chips**, this module ensures not only superior performance but also long-term reliability, with a focus on low power consumption and thermal efficiency. The **as-is** condition indicates that while the module may have minor cosmetic imperfections or signs of previous use, it remains fully functional and capable of delivering the same technical specifications as a new unit, provided it has been properly tested and verified for operation.

Ideal for **enterprise servers, storage arrays, and high-end workstations**, this Samsung DDR4 RDIMM is a cost-effective solution for upgrading memory in systems that require a balance of speed, capacity, and error resilience. Whether deployed in a **Dell PowerEdge, HP ProLiant, Lenovo ThinkSystem, or other x86-based server architecture**, this module ensures seamless integration with compatible motherboards and chipsets, offering a proven upgrade path for users looking to enhance their system s memory bandwidth without compromising on quality or performance. For organizations prioritizing uptime, data security, and computational efficiency, the **Samsung M39A2G40DB0-CPB** stands as a dependable choice for scaling memory capacity in demanding IT infrastructures.

The **Samsung M39A2G40DB0-CPB** is a DDR4 ECC RDIMM module with the following specifications: 2Rx4 configuration, PC4-2133 (DDR4-2133), 8GB capacity, and registered (RDIMM) design. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **High Performance for Server/Workstation Use**

The DDR4-2133 speed is adequate for most server, workstation, or enterprise applications where reliability and stability are prioritized over raw speed. While it s not the fastest module available, it strikes a balance between performance and cost for many professional workloads.

2. **ECC (Error-Correcting Code) Memory**

ECC memory is critical for data integrity in servers, workstations, and applications handling financial, scientific, or critical data. It detects and corrects single-bit errors, reducing the risk of crashes or data corruption especially important in long-running or mission-critical operations.

3. **Registered (RDIMM) Design**

RDIMMs are designed to interface directly with the memory controller on server-grade motherboards, reducing the load on the CPU and improving stability in multi-channel configurations. This makes them ideal for enterprise environments where memory density and reliability are key.

4. **Compatibility with Enterprise Hardware**

This module is likely compatible with a wide range of server motherboards, including those from Dell, HP, Lenovo, and other vendors that support DDR4 ECC RDIMMs. It s a common part in data center and professional IT environments.

5. **Proven Reliability**

Samsung is a reputable manufacturer with a strong track record in memory modules. While this is a "used" (as-is) purchase, Samsung s components are generally durable, and the module may still have significant remaining lifespan if well-maintained.

6. **Cost-Effective for Bulk or Refurbished Markets**

In the used or refurbished market, this module may be priced lower than new, offering good value for users who need ECC memory without paying premium prices for new parts.

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### **Cons**

1. **Used/As-Is Condition**

The biggest drawback is that this is a used module. Even if it appears functional, there s no guarantee of its full lifespan. Potential issues include:

- Wear and tear on the contacts or solder joints.

- Possible past exposure to heat or electrical stress, which could shorten its remaining useful life.

- No warranty or return policy, as it s being sold "as-is."

- Hidden defects (e.g., failing chips, degraded capacitors) that may not be immediately obvious.

2. **Outdated Speed for Modern Applications**

DDR4-2133 is slower than newer DDR4-2666 or DDR4-3200 modules, which are more common in modern workstations and servers. If you re running CPU-intensive workloads (e.g., video editing, AI training, or high-end gaming), the speed may become a bottleneck over time.

3. **Limited Upgrade Path**

If you re building or upgrading a system, this module may not be the best choice for future-proofing. Newer systems often support faster memory speeds, and mixing old and new modules can complicate things (e.g., requiring all slots to be populated for stability).

4. **Potential for Latency in Some Configurations**

While DDR4-2133 is fast enough for most server tasks, some high-end applications (e.g., certain database workloads or real-time systems) may benefit from higher speeds. The 2Rx4 configuration (8GB per module) is standard, but if you need larger capacities, you may need multiple modules.

5. **No Guarantee of Full Capacity**

Used memory can sometimes fail to register the full capacity (e.g., showing as 4GB instead of 8GB). While this is rare with RDIMMs, it s a risk when purchasing as-is.

6. **Environmental Factors**

If the module was previously used in a high-heat or poorly ventilated environment, its performance or longevity could be compromised. There s no way to verify its past conditions without testing it.

---

### **Conclusion**

The **Samsung M39A2G40DB0-CPB** is a solid choice for users who need **reliable, ECC-enabled DDR4 memory for server, workstation, or enterprise use** and are willing to accept the risks of purchasing used. Its strengths lie in **data integrity, stability, and compatibility with professional hardware**, making it suitable for environments where uptime and accuracy are critical.

However, the **as-is condition introduces uncertainty**, particularly regarding its remaining lifespan and potential hidden defects. If you re on a tight budget and can t afford new memory, this module could be a cost-effective solution **but only if you re prepared to test it thoroughly before committing to long-term use**. For most consumers or gamers, newer and faster memory would be a better investment, but for enterprise or data-center applications, it remains a practical option.

---

### **Recommendation**

- **Buy the module** but **test it immediately** after purchase. Run memory diagnostics (e.g., MemTest86) for an extended period to ensure it s functioning correctly. Consider running it in a non-critical system first if possible.

- If you can, **buy from a reputable seller with a return policy** or at least a money-back guarantee for defective modules. Avoid sellers with no feedback or poor ratings.

- **Check for physical damage** (e.g., bent pins, corrosion) before installation. If any issues are found, do not purchase.

- **Avoid this module** and opt for **new DDR4-2666 or DDR4-3200 ECC RDIMMs** (or LRDIMMs if your motherboard supports them) for better speed and future-proofing.

- If you must use used memory, consider **DDR4-2666 or DDR4-3200 modules** if available, as they offer better performance for the price.

- **Avoid purchasing as-is** unless you re comfortable with the risks. Look for modules labeled "refurbished with warranty" or "tested and certified" if available.

- If possible, **consult with a trusted IT professional** to assess whether the module is worth the risk for your specific use case.

- **Do not use this module**. Consumer-grade systems (especially gaming PCs) do not benefit from ECC memory, and the speed (DDR4-2133) is outdated. Invest in **non-ECC DDR4-3200 or DDR4-3600** for better performance.

---

### **Final Verdict**

This module is **best suited for enterprise or server environments where ECC memory is non-negotiable and cost is a primary concern**. For other use cases, the risks of purchasing used memory outweigh the benefits unless you re certain of its condition. If you proceed, **test it rigorously before deploying it in critical systems**. For most other users, newer or non-used memory is the safer and more future-proof choice.

Details:

For parts, pulled bad from server, Samsung 16GB DDR4 ECC RDIMM 2133, M39A2G40DB0-CPB.

part #: m39a2g40db0 prices

• $79.99-$149.99

specifications servermemor:

• brand: Samsung
• mpn: M39a2g40db0-cpb
• type: Ddr4 Sdram
• memory features: Ecc Memory
• form factor: Rdimm
• capacity per module: 16 Gb
• number of pins: 288
• country of origin: China

seller servermemor:

• # reviews: 362
• city: Salem, New Hampshire
• rating: 100.0%

returns servermemor:

• policy: No Returns

offer servermemor:

• started: February 11, 2026
• quantity: 1
• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0

general servermemor:

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

payments servermemor:

• other
• credit card: Mastercard
• wallet: Paypal

shipping servermemor:

• type: Calculated
• transit: 6-12 Days
• carrier: USPS
• cost: $8.30
• service: USPS Ground Advantage
• class: Standard

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