SAMSUNG M386A8K40BMB-CPB0Q Server Ram 64GB 4DRX4 PC4-2133P-LD1-10-DC0 DDR4 MC164

( Brand: Samsung ), ( Manufacturer Part Number: M386A8K40BMB-CPB0Q ), ( Type: Ddr4 Sdram ), ( Unit Type: Unit )

Review SAMSUNG 4drx4 Ddr4 Server Ram

The **Samsung M386A8K40BMB-CPB0Q 64GB DDR4 Server Memory Module** is a high-performance, enterprise-grade memory solution engineered to deliver exceptional reliability, speed, and efficiency in demanding server environments. Part of Samsung s **M386 series**, this **48GB (2 x 32GB) RDIMM (Registered DIMM)** module operates at **PC4-2133P (DDR4-2133 MHz)** clock speed, ensuring optimal data throughput for modern workloads, including virtualization, cloud computing, and high-performance computing (HPC) applications. With a **10-rank (10D) configuration**, this module maximizes memory density while maintaining robust error correction capabilities through **ECC (Error-Correcting Code)** technology, which safeguards data integrity by detecting and correcting single-bit errors in real time. The **LD1-10 (Low Power, 1.2V)** voltage specification further enhances energy efficiency, reducing power consumption without compromising performance a critical advantage for data centers seeking to balance power savings with high-speed processing.

Designed for **4-DIMM channels**, this module is compatible with a wide range of **Intel Xeon and AMD EPYC-based servers**, making it a versatile choice for both legacy and next-generation server architectures. The **CPB0Q** model designation indicates it is **fully compatible with Samsung s memory controller hub (MCH) and server-grade components**, ensuring seamless integration with major server manufacturers platforms. The **DDR4-2133 MHz** speed, paired with **4096-bit data bus width per rank**, enables sustained memory bandwidth of up to **34.1 GB/s per module**, significantly boosting system performance for memory-intensive tasks such as large-scale databases, AI/ML workloads, and real-time analytics. Additionally, the **10-die configuration** provides a balance between capacity and latency, making it ideal for environments where both high throughput and efficient memory utilization are prioritized.

Built to **JEDEC standards**, this module undergoes rigorous testing for **endurance, reliability, and thermal stability**, ensuring long-term operational consistency even under sustained heavy loads. Samsung s **server-grade memory technology** incorporates advanced **DRAM cells with enhanced retention times**, reducing the risk of data corruption during power fluctuations or extended uptimes. The **low-profile (LP) design** ensures compatibility with a variety of server form factors, including **2U and 4U rack-mounted systems**, while the **non-ECC option (if applicable in other variants) is not present here**, reinforcing its suitability for mission-critical applications where data accuracy is non-negotiable. Whether deployed in **enterprise storage solutions, high-frequency trading platforms, or large-scale virtualized environments**, this memory module delivers the speed, capacity, and stability required to handle the most demanding computational challenges with confidence.

### **Pros and Cons of Buying Samsung M386A8K40BMB-CPB0Q (64GB, 4Rx4, DDR4-2133, Server RAM)**

1. **Server-Grade Reliability** This is a **server-grade** RAM module designed for enterprise and workstation use, offering better stability, error correction (ECC), and longevity compared to consumer-grade memory.

2. **ECC (Error-Correcting Code) Support** The module includes **ECC**, which detects and corrects single-bit errors, making it ideal for data integrity in servers, workstations, and professional computing environments.

3. **Registered (RDIMM) Design** Being a **registered DIMM (RDIMM)**, it helps stabilize memory performance in multi-socket systems by reducing signal noise, which is crucial for high-end servers.

4. **Low Latency (CL10)** The **CAS latency of 10** ensures relatively fast data access compared to some other server RAM options, though it is not the fastest available.

5. **Dual Rank Configuration (4Rx4)** The **4-rank design** allows for better bandwidth utilization in supported systems, improving performance in multi-channel setups.

6. **Compatibility with High-End Servers** This RAM is designed for **Intel Xeon, AMD EPYC, and other enterprise-grade motherboards**, making it suitable for workstations, NAS systems, and professional servers.

7. **Long-Term Availability** Samsung s server RAM is often stocked by major vendors, ensuring easier replacement if needed.

8. **Good for Memory-Intensive Workloads** Ideal for **virtualization, databases, video editing, and other memory-heavy tasks** where stability is critical.

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1. **Not the Fastest DDR4 Option** Runs at **DDR4-2133**, which is slower than newer **DDR4-2933, DDR4-3200, or DDR5** modules. If you need maximum speed, this may not be the best choice.

2. **Higher Cost per GB Compared to Consumer RAM** Server-grade ECC RAM is **more expensive** than non-ECC consumer RAM, which may not be justified for casual use.

3. **Limited to Server/Workstation Systems** Not compatible with **consumer motherboards** (e.g., most Intel Z-series or AMD B/X-series boards). Requires a **server-grade or professional-grade motherboard**.

4. **Power Consumption** Registered DIMMs draw slightly more power than unbuffered (UDIMM) modules, which may be a concern in power-sensitive setups.

5. **Potential Overkill for Some Uses** If you re running a **home server, NAS, or a single-workstation task**, ECC may not be strictly necessary unless dealing with critical data.

6. **Fewer Upgrade Paths** If you later need to upgrade, you may need to replace the entire kit rather than mixing with different speeds or capacities.

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The **Samsung M386A8K40BMB-CPB0Q (64GB, DDR4-2133, ECC RDIMM)** is a **high-quality, reliable choice for enterprise, workstation, and professional server use**. It excels in **stability, error correction, and compatibility with high-end systems**, making it ideal for **virtualization, databases, and memory-intensive workloads**.

However, if you need **higher speeds (DDR4-3200 or DDR5)**, are on a **tight budget**, or working with a **consumer-grade system**, this may not be the best fit. It is **overkill for casual gaming or basic office use** but **perfect for environments where data integrity and long-term reliability are paramount**.

- You are building or upgrading a **server, workstation, or professional-grade PC**.

- You need **ECC support** for critical data (e.g., databases, virtualization, financial applications).

- Your motherboard supports **RDIMM/DIMM** and requires **DDR4-2133** for compatibility.

- You prioritize **long-term reliability and error correction**.

- You need **faster speeds (DDR4-3200 or DDR5)** for gaming or high-performance computing.

- You are on a **tight budget** and don t require ECC.

- Your system is **consumer-grade** (non-server motherboard).

- You can use **non-ECC RAM** (e.g., for a home NAS or basic workstation).

For most **server and workstation users**, this is an **excellent choice** just ensure your motherboard supports it. For other use cases, evaluate whether the **extra cost and features** justify the purchase.

Details:

No recovery discs/software, cords, or any other accessories are included, unless specified. R2 Ready for Resale Key Function Tested. Serial Numbers. Please see all photos for the condition of item you can expect to receive.

Product Specification, Make: Samsung, model: 64GB 4DRX4 PC4-2133P-LD1-10-DC0, Item Details/Info: See photos. #MC164-C4-F3. See photos and the item details/info area below for any major defects of listed. TeXes pxzj2834 TeXes 67 model: 64GB 4DRX4 PC4-2133P-LD1-10-DC0.

part #: m386a8k40bmbcpb0q prices

• $190.00-$1530.00

specifications servermemor:

• brand: Samsung
• mpn: M386a8k40bmb-cpb0q
• type: Ddr4 Sdram
• unit type: Unit

shipping servermemor:

• type: Fixed
• cost: $3.50
• service: Economy
• class: Economy
• transit: 2-5 Days

returns servermemor:

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

general servermemor:

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

seller servermemor:

• city: Jackson, Tennessee
• # reviews: 9808
• rating: 99.7%

payments servermemor:

• wallet: Paypal
• credit card: Visa
• other

offer servermemor:

• sold: 0
• best offers: True
• options: Ship-to-home
• started: May 6, 2026
• availability: In Stock

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