SK HYNIX H5AN4G4NMFR-TFC Server Memory 1X16GB 2RX4 DDR4 2133

( Brand: Sk Hynix ), ( Manufacturer Part Number: H5AN4G4NMFR-TFC ), ( Form Factor: Rdimm ), ( Type: Ddr4 Sdram ), ( Total Capacity: 16 Gb ), ( Bus Speed: Pc4-17000 ), ( Memory Features: Ecc Memory )

Review SK HYNIX 16gb 1x16gb 2rx4 Ddr4 Server Memory

The **SK Hynix H5AN4G4NMFRT-FC (1x16GB) DDR4-2133MHz Server Memory** is a high-performance, enterprise-grade memory module designed to deliver exceptional reliability, efficiency, and scalability for demanding server environments. Engineered with SK Hynix s advanced 16nm process technology, this **2Rx4 (240-pin) DDR4 SODIMM** module offers a robust solution for data centers, cloud infrastructure, and mission-critical workloads where low latency, high bandwidth, and consistent performance are paramount. With a capacity of **16GB per module**, it provides a compact yet powerful option for systems requiring single-channel memory configurations, such as certain workstations, embedded servers, or specialized rack-mounted solutions. The module operates at a standard **DDR4-2133MHz** speed, ensuring optimal compatibility with a wide range of server platforms while maintaining a balanced performance profile that minimizes power consumption without sacrificing throughput. Built with **low-power DDR4 (LP-DDR4) specifications**, it is particularly well-suited for energy-efficient deployments, reducing operational costs while sustaining peak performance under sustained workloads.

This memory module incorporates **SK Hynix s advanced error-correcting code (ECC) technology**, which actively detects and corrects single-bit errors, significantly enhancing data integrity in high-reliability environments. The **Registered (RDIMM) architecture** further mitigates signal integrity issues, reducing the risk of data corruption over long memory buses a critical feature for servers handling large datasets or running resource-intensive applications. The module is manufactured with **industrial-grade components**, ensuring extended operational lifespans and resistance to thermal fluctuations, making it ideal for 24/7 deployments in data centers. Its **low-profile design** (1.5mm height) allows for seamless integration into space-constrained systems, while the **2Rx4 configuration** ensures compatibility with motherboards featuring single-channel memory slots, broadening its applicability beyond traditional dual-channel setups.

Beyond its technical specifications, the **H5AN4G4NMFRT-FC** stands out for its **enterprise-level reliability**, featuring **100% tested memory cells** to guarantee consistent performance from the first cycle. The module adheres to **JEDEC standards**, ensuring broad compatibility with major server manufacturers, including Dell, HP, Lenovo, and others, while also supporting **ECC memory pooling** for enhanced fault tolerance in clustered environments. Its **low-power design** not only reduces heat generation but also extends the lifespan of associated cooling systems, contributing to a more sustainable and cost-effective infrastructure. Whether deployed in a **virtualized data center, AI/ML workloads, or high-frequency trading environments**, this SK Hynix memory module delivers a dependable, high-performance foundation for modern computing demands.

The **SK Hynix H5AN4G4NMFR (1x16GB, 2Rx4, DDR4-2133MHz, Server Memory)** is a popular choice for mid-range server memory, particularly for Intel Xeon and AMD EPYC systems. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Reliability and Brand Reputation**

SK Hynix is a well-established manufacturer known for producing high-quality memory modules. This kit is designed for server use, meaning it adheres to strict reliability standards, including error correction (ECC) and low-latency performance. It is also compatible with enterprise-grade server platforms, reducing the risk of compatibility issues.

2. **ECC Support**

The module includes **ECC (Error-Correcting Code)** functionality, which is essential for servers to detect and correct single-bit errors in memory. This helps prevent data corruption, crashes, and downtime, making it ideal for workloads like databases, virtualization, and enterprise applications.

3. **Low Power Consumption**

DDR4-2133MHz is more power-efficient than higher-speed DDR4 modules (e.g., 2400MHz or 2666MHz), which can be beneficial for reducing server power draw and cooling requirements. This is particularly useful in data centers where energy efficiency is a priority.

4. **Compatibility with Mid-Range Servers**

This kit is designed for **Intel Xeon (Skylake, Cascade Lake, Ice Lake, Sapphire Rapids) and AMD EPYC (Rome, Milan, Genoa) platforms**. It is a **2Rx4 configuration**, meaning it occupies two DIMM slots per channel, which is common in dual-socket servers. It is also **registered (R-DIMM)**, which helps stabilize memory performance in high-channel-count systems.

5. **Cost-Effective for Mid-Range Performance**

DDR4-2133MHz modules are generally more affordable than higher-speed alternatives (e.g., DDR4-3200MHz or DDR5). This makes them a budget-friendly option for servers that do not require extreme performance but still need reliability and ECC support.

6. **Proven Stability in Workloads**

Many users report stable performance in **virtualization (VMware, Hyper-V), databases (MySQL, PostgreSQL), and general server workloads**. The 2133MHz speed is sufficient for most non-gaming or high-end computing tasks, making it a practical choice for business and enterprise environments.

7. **Easy Upgrade Path**

Since DDR4 is still widely supported in many server platforms, upgrading to this kit is straightforward. It can also serve as a stepping stone before moving to higher-capacity or faster memory in the future.

8. **Warranty and Support**

SK Hynix modules typically come with **limited lifetime warranties** and are backed by reputable sellers (e.g., Amazon, Newegg, server vendors). This provides peace of mind in case of defects.

---

### **Cons**

1. **Lower Speed Compared to Modern Standards**

DDR4-2133MHz is **outdated compared to newer server memory standards** like DDR4-3200MHz, DDR4-3600MHz, or DDR5. While this may not be an issue for most server workloads, it can limit performance in **CPU-intensive or memory-bound applications** where higher speeds provide a noticeable boost. For example, newer AMD EPYC (e.g., Genoa) and Intel Xeon (e.g., Sapphire Rapids) processors may not fully utilize 2133MHz memory, leading to wasted potential.

2. **Limited Capacity Options**

This is a **single-rank (1Rx4) module**, but it is sold as a **2Rx4 kit (16GB x 1)**. While this is fine for small servers, larger configurations (e.g., 32GB, 64GB, or 128GB per socket) may require multiple kits, increasing costs. For high-memory workloads, you may need to purchase additional modules, which could become expensive.

3. **Not Future-Proof**

DDR4 is being phased out in favor of **DDR5**, which offers higher speeds, lower power consumption, and larger capacities. If you plan to upgrade your server hardware in the next few years, investing in DDR4-2133MHz now may require a full memory replacement later, adding to long-term costs.

4. **Potential Latency Bottlenecks**

While 2133MHz is not extremely slow, it may introduce **slightly higher latency** compared to faster DDR4 modules. In some workloads (e.g., real-time analytics, high-frequency trading), even small latency differences can matter.

5. **Limited Availability of Faster Alternatives**

DDR4-2133MHz is still widely available, but **DDR4-3200MHz or DDR5 modules** may be more difficult to find at competitive prices in some regions. If you later decide to upgrade, you may face higher costs or longer lead times.

6. **No RDIMM/LRDIMM Flexibility**

This is a **registered (R-DIMM)** module, which is great for stability but does not support **Load-Reduced (LRDIMM)** configurations. LRDIMMs are useful in very large memory setups (e.g., 1TB per socket) because they reduce the load on the memory controller. If you plan to scale to extreme memory capacities, R-DIMMs may become a limitation.

7. **Compatibility with Older Platforms Only**

While this module works well with modern Intel Xeon and AMD EPYC CPUs, it may not be compatible with **very old server platforms** (e.g., pre-Skylake Xeon or older AMD Opterons). Ensure your server s chipset and BIOS support DDR4-2133MHz before purchasing.

---

### **Conclusion**

The **SK Hynix H5AN4G4NMFR (16GB, DDR4-2133MHz, ECC, R-DIMM)** is a **solid, reliable choice for mid-range server memory**, particularly for users who prioritize **stability, cost-effectiveness, and compatibility with Intel Xeon and AMD EPYC systems**. It excels in **enterprise, virtualization, and database workloads** where ECC and low power consumption are critical. However, it is **not the fastest option available**, and its lower speed may become a bottleneck in future-proofing or high-performance scenarios.

If your server workloads are **not extremely demanding** and you need a **proven, stable memory solution**, this kit is an excellent purchase. However, if you anticipate **scaling to larger memory capacities, running CPU-intensive workloads, or upgrading to newer platforms soon**, you may want to consider **DDR4-3200MHz or DDR5 modules** for better long-term performance.

---

### **Recommendation**

- You are running **Intel Xeon (Skylake or newer) or AMD EPYC (Rome or newer)**.

- Your workloads are **virtualization, databases, or general server tasks** that do not require extreme memory speeds.

- You need **ECC support** and want a **reliable, cost-effective solution**.

- Your server s memory controller **does not support faster DDR4 speeds** (e.g., older platforms).

- You need **higher memory speeds (DDR4-3200MHz or DDR5)** for better performance.

- You plan to **scale to very large memory capacities** (e.g., 1TB per socket), in which case **LRDIMMs or DDR5 may be better**.

- Your budget allows for **faster modules** (e.g., **Samsung M393A2K40BB0-CTF, Corsair CMW32GX4M2E3200C16**) that offer better long-term flexibility.

If possible, **check if your server supports DDR4-3200MHz or DDR5** before committing to this module. If you can upgrade later, it may be worth waiting for a slightly faster kit to avoid a full memory replacement in the future.

Overall, this is a **great budget-friendly ECC memory kit** for most server users, but weigh your long-term needs before purchasing.

Details:

It does not come with a Retail box/Power Adapter/ Power Cable or any other wires at all, unless shown in pictures. Condition: It has been fully tested, results are listed above. The picture in the listing is original. Orders outside the US are not protected by us or covered any kind of warranty.

Products used in foreign outlet's without proper use of a voltage adapter/converter will not be covered. All corded products are designed to work with North American 110/120V outlet's only. Once the packages leave USA.

part #: h5an4g4nmfr prices

• $159.98-$398.00

specifications servermemor:

• brand: Sk Hynix
• mpn: H5an4g4nmfr-tfc
• form factor: Rdimm
• type: Ddr4 Sdram
• total capacity: 16 Gb
• bus speed: Pc4-17000
• memory features: Ecc Memory

offer servermemor:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• best offers: True
• quantity: 2
• started: February 27, 2026

seller servermemor:

• city: Newark, California
• rating: 99.9%
• # reviews: 1692

returns servermemor:

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

payments servermemor:

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

shipping servermemor:

• transit: 5-11 Days
• carrier: FedEx, UPS
• class: Standard
• service: FedEx Ground / FedEx Home Delivery, UPS Ground
• cost: $0.00
• type: Calculated

general servermemor:

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

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