CISCO UCS-MR-1X64G4RS-H Ecc Rdimm DDR4-2666V 64GB 288-PIN

( Brand: Cisco ), ( Manufacturer Part Number: UCS-MR-1X64G4RS-H ), ( Model: DDR4-2666V ), ( Total Capacity: 64 Gb ), ( Item Length: 13 In ), ( Memory Features: Ecc Memory, Registered ), ( Form Factor: Rdimm ), ( Type: Ddr4 Sdram ), ( Manufacturer Warranty: Lifetime ), ( Item Height: 0.1 In ), ( Number Of Pins: 288 ), ( Bus Speed: Pc4-21300 ), ( Item Width: 4.5 In )

Review CISCO Ecc Registered Rdimm 288-pin

The **Cisco UCS-MR1x64G4RS-H** is a high-performance, enterprise-grade memory module designed specifically for Cisco Unified Computing System (UCS) servers, delivering unmatched reliability, scalability, and efficiency for demanding workloads. This **64GB DDR4 Registered DIMM (RDIMM)** module operates at a robust **2666MHz** clock speed, ensuring optimal data throughput and reduced latency for mission-critical applications such as virtualization, cloud computing, big data analytics, and high-performance computing (HPC). Engineered with **ECC (Error-Correcting Code) technology**, it provides critical protection against data corruption by detecting and automatically correcting single-bit errors, significantly enhancing system stability and data integrity particularly essential in environments where uptime and accuracy are non-negotiable.

The module adheres to the **288-pin DDR4 standard**, ensuring seamless compatibility with Cisco s latest UCS server platforms, including the UCS B-Series Blade Servers and C-Series Rack Servers. Its **Registered DIMM architecture** mitigates signal integrity issues in high-density configurations, making it ideal for servers with multiple memory channels, where signal stability is crucial for maintaining peak performance. With a **64GB capacity**, this module is engineered to support large-scale virtualization environments, enabling administrators to consolidate workloads while maintaining high availability and performance. The **low-power design** of the DDR4-2666 RDIMM further optimizes energy efficiency, reducing operational costs without compromising on speed or reliability.

Built to Cisco s stringent quality standards, the **UCS-MR1x64G4RS-H** is rigorously tested for compatibility, durability, and long-term reliability, ensuring it meets the demanding requirements of data centers worldwide. Whether deployed in a high-availability cluster, a hyperscale cloud infrastructure, or a financial transaction processing system, this memory module delivers the performance and resilience needed to handle the most intensive computational tasks. Its seamless integration with Cisco s UCS ecosystem also simplifies deployment and management, allowing IT teams to focus on optimizing their infrastructure rather than troubleshooting compatibility issues. For organizations prioritizing scalability, efficiency, and data protection, the **Cisco UCS-MR1x64G4RS-H** stands as a cornerstone component for building future-proof, high-performance computing environments.

### **Pros and Cons of buying a Cisco UCS-MR-1x64G4RS-H (64GB DDR4-2666 ECC RDIMM, 288-Pin)**

#### **Pros**

1. **High Memory Capacity (64GB RDIMM)**

- Provides substantial memory for virtualization, databases, or high-performance workloads, reducing the need for additional memory modules.

- Supports large-scale applications that require significant RAM for smooth operation.

2. **DDR4-2666 MHz Speed**

- Faster memory speed improves data processing and reduces latency compared to slower DDR4 modules, enhancing overall system performance.

- Better suited for modern workloads that demand high throughput.

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

- Helps prevent data corruption by detecting and correcting single-bit errors, which is critical for mission-critical applications, databases, and virtualization environments.

- Reduces downtime and improves data integrity in high-reliability environments.

4. **Compatibility with Cisco UCS Servers**

- Designed specifically for Cisco Unified Computing System (UCS) servers, ensuring optimal performance and compatibility with Cisco s hardware and software stack.

- Works seamlessly with Cisco s management tools (e.g., UCS Manager, Intersight), simplifying administration.

5. **288-Pin RDIMM Form Factor**

- Standardized form factor ensures easy installation and replacement in supported Cisco UCS servers.

- RDIMM (Registered DIMM) reduces bus contention, improving stability in multi-socket systems.

6. **Scalability**

- Enables future upgrades by allowing additional memory modules to be added as needed, supporting growing workloads without replacing the entire system.

7. **Reliability in Enterprise Environments**

- Cisco s enterprise-grade components ensure durability and long-term performance, making it suitable for data centers and mission-critical deployments.

---

#### **Cons**

1. **High Cost**

- 64GB DDR4 ECC RDIMM modules are significantly more expensive than non-ECC or lower-capacity modules, increasing the total cost of ownership (TCO).

- May not be cost-effective for small-scale or non-critical workloads where lower memory requirements suffice.

2. **Limited Availability and Lead Times**

- High-demand enterprise-grade memory modules (especially ECC RDIMMs) may have longer lead times or require special ordering, causing delays in procurement.

- Some Cisco UCS models may have specific memory slot constraints, limiting flexibility in configuration.

3. **Power and Cooling Considerations**

- Higher memory capacity increases power consumption and heat generation, which may require additional cooling solutions or adjustments to server configurations.

- Over-provisioning memory without corresponding CPU or storage upgrades could lead to inefficient resource utilization.

4. **Vendor Lock-In with Cisco**

- Cisco s proprietary ecosystem means these modules are only compatible with Cisco UCS servers, limiting flexibility if switching to other vendors (e.g., Dell, HPE) in the future.

- May require additional licensing or support contracts for full utilization of Cisco s management tools.

5. **Potential for Overkill**

- For workloads with modest memory requirements (e.g., basic virtualization, small databases, or non-critical applications), 64GB may be excessive, leading to wasted capacity and higher costs.

- Requires careful planning to ensure the memory is fully utilized to justify the investment.

6. **Depreciation Risk**

- Like all hardware, memory modules depreciate over time. If the server s lifecycle is long, the upfront cost may not be fully recovered by the time the system is replaced.

- Rapid advancements in memory technology (e.g., DDR5) could make this module obsolete sooner than expected.

7. **Complexity in Management**

- Cisco UCS systems, while powerful, require specialized knowledge to configure and manage effectively. Organizations without in-house expertise may need to rely on third-party support, increasing operational costs.

---

### **Conclusion**

The **Cisco UCS-MR-1x64G4RS-H (64GB DDR4-2666 ECC RDIMM)** is an excellent choice for **enterprise environments** where **high memory capacity, reliability, and performance** are critical. It excels in **virtualization, databases, and high-demand workloads** where data integrity and speed are non-negotiable. The ECC support and compatibility with Cisco s ecosystem make it a robust investment for organizations prioritizing stability and scalability.

However, the **high cost, vendor lock-in, and potential over-provisioning risks** make it less ideal for **small-scale or budget-conscious deployments**. If your workloads do not require 64GB of memory or if you plan to use non-Cisco hardware in the future, alternative memory solutions (e.g., standard DDR4 ECC modules from other vendors) may offer better cost efficiency.

### **Recommendation**

- You are deploying in a **Cisco UCS environment** with **high memory demands** (e.g., large-scale virtualization, enterprise databases, or AI/ML workloads).

- Data integrity and error correction are **critical** for your applications.

- You have the **budget and infrastructure** to support the additional power and cooling requirements.

- Your workloads **do not require 64GB of memory**, and lower-capacity modules (e.g., 32GB or 16GB) would suffice.

- You are **not locked into Cisco s ecosystem** and prefer vendor-neutral solutions.

- Cost efficiency is a **priority**, and you can find similarly performing non-Cisco ECC RDIMMs at a lower price.

- Your server s **future upgrade path** includes non-Cisco hardware, making this module a less flexible choice.

For most **enterprise-grade Cisco UCS deployments**, this module is a **strong recommendation** due to its performance and reliability. For other use cases, evaluate whether the benefits outweigh the costs before purchasing.

Details:

part #: ucsmr1x64g4rs prices

• $75.00-$155.00

specifications servermemor:

• brand: Cisco
• mpn: Ucs-mr-1x64g4rs-h
• model: Ddr4-2666v
• total capacity: 64 Gb
• item length: 13 In
• memory features: Ecc Memory, Registered
• form factor: Rdimm
• type: Ddr4 Sdram
• manufacturer warranty: Lifetime
• item height: 0.1 In
• number of pins: 288
• bus speed: Pc4-21300
• item width: 4.5 In

payments servermemor:

• other
• wallet: Paypal
• money order
• credit card: Discover

returns servermemor:

• policy: No Returns

shipping servermemor:

• cost: $0.00
• class: Standard
• transit: 3-9 Days
• service: USPS Ground Advantage
• carrier: USPS
• type: Calculated

general servermemor:

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

seller servermemor:

• rating: 100.0%
• # reviews: 102
• city: Atkins, Iowa

offer servermemor:

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

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