SAMSUNG M393A2G40D80-CPB Ecc Rdimm Server Ram DDR4-2133MHZ

( Brand: Samsung ), ( Manufacturer Part Number: M393A2G40D80-CPB ), ( Memory Features: Ecc Memory ), ( Form Factor: Rdimm ), ( Type: Ddr4 Sdram ), ( Total Capacity: 16 Gb ), ( Number Of Pins: 288 ), ( Bus Speed: Pc4-17000 ), ( Country Of Origin: South Korea )

Review SAMSUNG 16gb Ddr4-2133mhz Ecc Rdimm Server Ram

The **Samsung M393A2G40D80-CPB DDR4-2133MHz ECC RDIMM Server RAM** is a high-performance, enterprise-grade memory module meticulously engineered to deliver uncompromising reliability, speed, and efficiency in demanding server environments. Part of Samsung s renowned **DDR4 RDIMM (Registered DIMM)** lineup, this 8GB (256MB x 32-bit) module is designed with cutting-edge **low-power, high-density architecture** to optimize data throughput while maintaining exceptional stability in multi-socket server configurations. Built on Samsung s proprietary **9nm-class process technology**, the module ensures superior signal integrity and reduced latency, making it an ideal choice for data centers, cloud computing platforms, and high-performance computing (HPC) workloads where consistency and performance are paramount.

Featuring **ECC (Error-Correcting Code) technology**, this RDIMM module actively detects and corrects single-bit errors in real-time, safeguarding critical data integrity in mission-critical applications such as virtualization, database management, and financial transaction processing. The **registered DIMM design** further enhances system stability by buffering commands between the memory controller and the DIMMs, reducing signal interference and preventing data corruption in high-channel-count server setups. With a **2133MHz operational frequency**, this module achieves a balanced performance boost without excessive power consumption, ensuring energy efficiency while maintaining peak productivity for CPU-intensive tasks.

Constructed with **high-quality Samsung DRAM chips**, the M393A2G40D80-CPB is built to withstand the rigors of 24/7 operation, offering exceptional thermal resilience and longevity. The module adheres to strict **JEDEC standards** for compatibility with a wide range of enterprise servers, including those from Dell, HP, Lenovo, and other leading manufacturers, making it a versatile upgrade option for administrators looking to enhance their infrastructure. Whether deployed in a single-socket workstation or a multi-node cluster, this RDIMM module ensures seamless scalability, allowing administrators to expand memory capacity incrementally as workload demands grow.

Beyond its technical prowess, the Samsung M393A2G40D80-CPB is engineered with **low-profile and high-density form factors**, optimizing space utilization in densely populated server racks while minimizing heat dissipation. Its **fully buffered architecture** further reduces electromagnetic interference (EMI), contributing to a more stable and reliable computing environment. Whether deployed in a virtualized data center, a high-frequency trading platform, or a large-scale AI training cluster, this memory module delivers the precision, endurance, and performance required to handle the most demanding computational challenges with ease. For organizations prioritizing both performance and reliability, the Samsung M393A2G40D80-CPB stands as a premium choice for next-generation server memory solutions.

The **Samsung M393A2G40D80-CPB** is a **256GB (4x64GB) ECC RDIMM DDR4-2133MHz** server memory module designed for high-end enterprise and data center use. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **High Capacity and Density**

- The module offers **256GB of RAM in a single 288-pin DIMM slot**, which is ideal for large-scale servers, virtualization, and high-performance computing (HPC) workloads where memory capacity is critical.

- The **4x64GB configuration** allows for easy scalability you can add more modules to further increase capacity without replacing the entire setup.

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

- ECC RAM is designed to **detect and correct single-bit errors**, reducing the risk of data corruption in critical applications (e.g., databases, virtual machines, or financial systems).

- This is particularly valuable in **server environments** where uptime and data integrity are non-negotiable.

3. **RDIMM (Registered DIMM) Design**

- RDIMMs use a **register chip** to buffer signals between the memory controller and the DIMM, improving stability and reducing power consumption compared to unbuffered DIMMs (UDIMMs).

- This makes them suitable for **high-end servers** with strict power and signal integrity requirements.

4. **DDR4-2133MHz Speed**

- While not the fastest DDR4 speed (e.g., 2933MHz or 3200MHz), **2133MHz is still reliable and widely compatible** with older and mid-range server platforms.

- It strikes a balance between **performance and compatibility**, ensuring smooth operation in most enterprise systems.

5. **Reliability and Durability**

- Samsung is a **trusted manufacturer** in the server memory market, known for **high-quality components and long-term reliability**.

- The module is built for **24/7 operation**, making it suitable for data centers and mission-critical environments.

6. **Compatibility with Major Server Platforms**

- This module is designed for **Intel Xeon and AMD EPYC-based servers**, including models from Dell EMC, HPE, Lenovo, and Supermicro.

- It is **non-ECC-compatible** (i.e., it will not work in non-ECC slots), which prevents accidental misuse in consumer-grade systems.

7. **Low Latency and High Bandwidth**

- DDR4-2133MHz provides **sufficient bandwidth** for most server workloads, including virtualization, databases, and web hosting.

- The **low latency** ensures that memory access is efficient, reducing bottlenecks in CPU-bound tasks.

8. **Easy Upgrade Path**

- Since it is a **single-rank RDIMM**, it can be **mixed with other RDIMMs** in compatible slots, allowing for incremental upgrades.

- The **288-pin DIMM form factor** is standard in most enterprise servers, ensuring broad compatibility.

---

### **Cons**

1. **High Cost**

- At **256GB in a single module**, this RAM is **expensive** compared to smaller capacities or consumer-grade memory.

- The price per GB is significantly higher than **UDIMMs or non-ECC modules**, making it a **specialized purchase** rather than a cost-effective option for general use.

2. **Limited Speed for High-End Workloads**

- **2133MHz is on the slower side** for modern server workloads, especially those requiring **high memory bandwidth** (e.g., AI/ML training, video editing, or extreme virtualization).

- If the server supports **DDR4-2933MHz or DDR4-3200MHz**, upgrading to faster RAM could provide **better performance** for memory-intensive tasks.

3. **Requires ECC-Compatible Slots**

- This module **cannot be used in non-ECC slots**, which may limit flexibility in some server configurations.

- If the server has a mix of ECC and non-ECC slots, you may need to **dedicate specific slots** for this module.

4. **Power Consumption**

- RDIMMs consume **more power than UDIMMs** due to the register chip, which may impact **server efficiency** in large-scale deployments.

- While the difference is minimal per module, **high-capacity deployments** (e.g., 100 modules) could lead to **higher cooling and power costs**.

5. **Potential Compatibility Issues with Older Servers**

- While **2133MHz is widely supported**, some **very old servers** (pre-DDR4) may not recognize it, requiring **firmware or BIOS updates**.

- Always **check compatibility** with your specific server model before purchasing.

6. **No Heat Spreaders (Potential Overheating Risk)**

- Unlike some high-end server RAM, this module **does not include heat spreaders**, which could lead to **higher temperatures** in high-density configurations.

- Proper **cooling solutions** may be needed in **rack-mounted servers** with limited airflow.

7. **Not Ideal for Consumer or Workstation Use**

- Due to its **ECC and RDIMM requirements**, this RAM is **not suitable for gaming PCs, workstations, or non-server applications**.

- Purchasing it for non-server use would be **wasteful** given the cost and constraints.

---

### **Conclusion**

The **Samsung M393A2G40D80-CPB (256GB DDR4-2133MHz ECC RDIMM)** is a **high-capacity, enterprise-grade memory module** best suited for **large-scale servers, virtualization environments, databases, and HPC workloads** where **reliability, error correction, and scalability** are critical.

- **Data centers** requiring massive RAM capacity.

- **Virtualization hosts** running multiple VMs.

- **Database servers** (e.g., Oracle, SQL Server) where memory integrity is essential.

- **High-availability servers** where uptime is non-negotiable.

- You need **higher memory speeds** (e.g., 2933MHz ).

- You are working with **budget constraints** (it is expensive per GB).

- Your workloads are **not server-centric** (e.g., gaming, content creation, or general computing).

- You require **mixed ECC/non-ECC configurations** (though this is rare in enterprise setups).

---

### **Recommendation**

You are **upgrading a high-end server** (e.g., Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem) that **requires ECC RDIMM support**.

Your workloads **demand large memory pools** (e.g., running dozens of VMs, large databases, or AI/ML models).

You **prioritize reliability and error correction** over raw speed.

You plan to **scale memory capacity incrementally** by adding more modules.

You need **faster speeds** (e.g., DDR4-3200MHz) for **CPU-bound or memory-intensive tasks**.

Your budget is **limited**, and you can achieve similar performance with **lower-capacity ECC modules**.

You are **not using a server platform** (e.g., workstation, gaming PC, or non-ECC-compatible system).

You can find **better value** in **alternative brands** (e.g., Corsair, Kingston, or Crucial) with similar specs.

- If **speed is more important than capacity**, consider **DDR4-2933MHz or DDR4-3200MHz ECC RDIMMs**.

- If **cost is a concern**, look for **lower-capacity (e.g., 128GB or 64GB) ECC RDIMMs** and scale up gradually.

- If **compatibility is an issue**, verify **server-specific support** (some brands offer **server-optimized memory** with better compatibility).

This is a **premium, high-performance server RAM module** that **justifies its cost** in the right environment. For **enterprise deployments where reliability and capacity are paramount**, it is an excellent choice. However, for **non-server or cost-sensitive applications**, there may be more economical alternatives. Always **verify compatibility** with your specific server model before purchasing.

Details:

Shipped with USPS Ground Advantage. Condition is Used. Samsung 16GB 1 16GB DDR4-2133MHz ECC RDIMM Server RAM.

part #: m393a2g40d80 prices

• $63.33-$925.00

specifications servermemor:

• brand: Samsung
• mpn: M393a2g40d80-cpb
• memory features: Ecc Memory
• form factor: Rdimm
• type: Ddr4 Sdram
• total capacity: 16 Gb
• number of pins: 288
• bus speed: Pc4-17000
• country of origin: South Korea

offer servermemor:

• best offers: True
• sold: 1
• availability: In Stock
• options: Ship-to-home
• quantity: 0
• started: February 15, 2026

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shipping servermemor:

• type: Calculated
• service: USPS Ground Advantage
• class: Standard
• transit: 5-9 Days
• cost: $0.00
• carrier: USPS

general servermemor:

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

seller servermemor:

• # reviews: 26
• city: Sault Sainte Marie, Michigan
• rating: 100.0%

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• paid by: Buyer
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