SAMSUNG M393A8G40BAB2-CWEBY Server Memory 64GB 2RX4 PC4-3200AA DDR4

( Brand: Samsung ), ( Manufacturer Part Number: M393A8G40BAB2-CWEBY ), ( Model: SAMSUNG M393A8G40BAB2-CWEBY ), ( Form Factor: Rdimm ), ( Type: Ddr4 Sdram ), ( Total Capacity: 64 Gb ), ( Number Of Pins: 288 ), ( Bus Speed: Pc4-25600 ), ( Memory Features: Ecc Memory ), ( Country Of Origin: China )

Review SAMSUNG 2rx4 Ddr4 Server Memory

The **Samsung M393A8G40BAB2-CWEBY 64GB (2x32GB) DDR4 Server Memory Kit** is a high-performance, enterprise-grade memory module designed to deliver exceptional reliability, speed, and efficiency in demanding server environments. Engineered with Samsung s proprietary **ICA (Intelligent Controller Architecture)**, this **2-rank x4 (2Rx4) configuration** module operates at an optimized **PC4-3200 (DDR4-2133 MT/s)** speed, ensuring seamless data transfer and reduced latency for critical workloads. Each module features **64GB of low-power DDR4 memory**, packaged in a **288-pin SODIMM form factor**, making it ideal for high-density server configurations where space and performance are paramount. The **ECC (Error-Correcting Code) and Registered (Buffered) architecture** enhances data integrity by detecting and correcting errors in real time, while the **2133 MHz clock speed** provides a balanced performance boost for applications requiring sustained throughput, such as virtualization, cloud computing, and database management. Built with **industrial-grade components**, this memory module is engineered to withstand prolonged operational stress, offering extended lifespan and stability in 24/7 server environments. The **CWEBY (CWE) certification** ensures compatibility with a wide range of server platforms, including those from major vendors, while the **low-power design** helps optimize energy efficiency, reducing operational costs without compromising performance. Whether deployed in data centers, enterprise servers, or high-performance computing clusters, this module delivers a robust foundation for handling intensive computational tasks with precision and reliability.

### **Pros and Cons of buying a Samsung M393A8G40BAB2-CWEBY (64GB, 2Rx4, PC4-3200, DDR4 Server Memory)**

1. **High Performance and Compatibility** This is a **low-voltage (1.2V) DDR4 ECC RDIMM** module designed for **enterprise and server workloads**, ensuring stability under heavy loads. It supports **PC4-3200 (2133 MHz)** speeds, which is a common standard in modern servers, providing a balance between speed and power efficiency.

2. **Error-Correcting Code (ECC) Memory** ECC memory helps detect and correct single-bit errors, which is critical for **data integrity in servers, databases, and virtualization environments**. This reduces the risk of crashes due to memory corruption.

3. **Registered (RDIMM) Design** RDIMMs are optimized for **multi-channel server architectures**, reducing signal interference and improving reliability in high-density configurations. They are a better choice than UDIMMs for most server applications.

4. **Reliability and Durability** Samsung is a reputable manufacturer with a strong track record in **server-grade memory**, ensuring long-term stability and compatibility with major server platforms (Dell, HP, Lenovo, etc.).

5. **Cost-Effective for High-Capacity Needs** At **64GB per module**, this is a cost-effective way to expand memory in servers without overpaying for higher capacities. It can be paired with other modules for **larger configurations (e.g., 128GB, 256GB, etc.)**.

6. **Low Power Consumption (1.2V)** Compared to older DDR4 modules (which often run at 1.35V or higher), this module is more power-efficient, reducing heat and energy costs in data centers.

7. **Widely Supported** Compatible with **Intel Xeon and AMD EPYC-based servers**, making it versatile for both **x86 enterprise and cloud environments**.

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1. **Not for Consumer or Gaming PCs** This is **server-grade memory** and **not compatible with consumer motherboards** (e.g., Intel Z-series, AMD B/X-series). It requires a **server-grade motherboard with RDIMM support**.

2. **Limited Speed for High-End Workloads** While **2133 MHz (PC4-3200)** is sufficient for most server workloads, it may not be optimal for **high-performance computing (HPC) or extreme multi-core workloads** that benefit from higher speeds (e.g., 2933 MHz or 3200 MHz).

3. **Higher Cost per GB Compared to Consumer Memory** Server memory is **more expensive per gigabyte** than consumer DDR4, though the price difference narrows when buying in bulk for enterprise setups.

4. **Requires Proper Server Configuration** If used in a **non-server environment (e.g., a workstation with incorrect BIOS settings)**, it may cause instability or compatibility issues. Always verify **memory slot configuration (2Rx4, 4Rx4, etc.)** with your motherboard.

5. **No Overclocking Support** Unlike consumer memory, this module **cannot be overclocked** beyond its rated speed, limiting flexibility for performance tuning.

6. **Potential Compatibility Issues with Older Servers** Some **legacy servers** may not support **low-voltage (1.2V) DDR4 modules**, requiring verification before purchase.

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The **Samsung M393A8G40BAB2 (64GB, 2Rx4, PC4-3200, DDR4 ECC RDIMM)** is an **excellent choice for enterprise, server, and data center environments** where **reliability, error correction, and stability** are critical. It strikes a **good balance between performance, power efficiency, and cost** for most server workloads, including **virtualization, databases, and general enterprise computing**.

However, it is **not suitable for consumer PCs, gaming rigs, or non-server workstations** due to its **registered design and lack of consumer compatibility**. If you need **higher speeds for HPC or extreme multi-core workloads**, you may want to consider **DDR4-2933 or DDR4-3200 RDIMMs** (if available).

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- You are setting up or upgrading a **server (Dell PowerEdge, HP ProLiant, Lenovo ThinkSystem, etc.)**.

- You need **ECC memory for data integrity** in virtualization, databases, or mission-critical applications.

- You require **64GB of reliable, low-power memory** for a **multi-channel server configuration**.

- Your server supports **DDR4-2133 (PC4-3200) RDIMMs** and has the correct **memory slot layout (2Rx4)**.

- You are building a **consumer PC, gaming rig, or workstation** (use **UDIMM or SO-DIMM instead**).

- You need **higher memory speeds (2933 MHz or 3200 MHz)** for performance-intensive tasks.

- Your server **does not support RDIMMs or low-voltage (1.2V) DDR4**.

- You are on a **tight budget for consumer-grade memory** (though server memory is justified for enterprise use).

**Final Verdict:** This is a **solid, reliable choice for server memory** and a **wise investment for businesses and data centers** where uptime and data integrity matter. For non-server use, explore **compatible alternatives** based on your specific platform.

Details:

Condition: Used, Quantity: 1 SAMSUNG 64GB 2Rx4 PC4-3200AA DDR4 SERVER MEMORY M393A8G40BAB2-CWEBY Pulled from a Supermach Server and tested in an HP DL380 Gen10.

part #: m393a8g40bab2 prices

• $398.99-$1571.39

specifications servermemor:

• brand: Samsung
• mpn: M393a8g40bab2-cweby
• model: Samsung M393a8g40bab2-cweby
• form factor: Rdimm
• type: Ddr4 Sdram
• total capacity: 64 Gb
• number of pins: 288
• bus speed: Pc4-25600
• memory features: Ecc Memory
• country of origin: China

seller servermemor:

• city: Sioux Falls, South Dakota
• # reviews: 163
• rating: 100.0%

general servermemor:

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

payments servermemor:

• other
• wallet: Apple-pay
• credit card: Discover

shipping servermemor:

• carrier: USPS
• type: Calculated
• service: USPS Priority Mail Small Flat Rate Box
• class: Expedited
• cost: $9.80
• transit: 3-8 Days

returns servermemor:

• policy: No Returns

offer servermemor:

• options: Ship-to-home
• quantity: 4
• sold: 0
• started: March 9, 2026
• availability: In Stock

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