SK HYNIX HMA81GU6JR8N-XN Dimm Server Ram Modules 32GB 4X8GB DDR4 PC4-3200AA

( Brand: Sk Hynix ), ( Manufacturer Part Number: HMA81GU6JR8N-XN ), ( Form Factor: Dimm ), ( Type: Ddr4 Sdram ), ( Total Capacity: 32 Gb ), ( Capacity Per Module: 8 Gb ), ( Number Of Pins: 288 ), ( Bus Speed: Pc4-3200aa )

Review SK HYNIX Ddr4 Dimm Server Ram Modules

The **SK Hynix HMA81GU6JR8N-XN 32GB (4x8GB) DDR4 PC4-3200AA Registered DIMM Server RAM** is a high-performance, enterprise-grade memory module designed to deliver exceptional reliability, speed, and efficiency in demanding server environments. Engineered with SK Hynix s advanced 16nm process technology, these **low-power, high-density DDR4 modules** feature a **240-pin SODIMM form factor**, optimized for seamless integration into modern server platforms, workstations, and high-performance computing (HPC) systems. Each module operates at a **3200MHz (PC4-3200) data transfer rate**, enabling rapid data processing and reduced latency, making it ideal for applications requiring real-time performance, such as virtualization, database management, and AI workloads. The **Registered (RDIMM) configuration** ensures stable signal integrity across multi-socket systems, minimizing errors and enhancing system stability particularly in large-scale configurations where memory bandwidth and consistency are critical.

Built with **ECC (Error-Correcting Code) functionality**, these modules provide an additional layer of data protection by detecting and correcting single-bit errors on the fly, safeguarding against silent data corruption that could otherwise compromise mission-critical operations. The **DDR4-3200AA (Advanced Application) specification** further optimizes power efficiency and thermal performance, reducing heat generation while maintaining peak performance an essential feature for data centers seeking to balance speed with energy consumption. Each module is **fully compatible with Intel Xeon, AMD EPYC, and other high-end server processors**, ensuring broad adoption across a range of enterprise-grade hardware. The **XN (Extended New) designation** indicates that these modules are part of SK Hynix s latest generation, incorporating refined manufacturing processes and enhanced reliability standards to meet the rigorous demands of modern server architectures.

Beyond performance, these RAM modules prioritize **durability and longevity**, featuring robust soldered memory chips that resist physical stress and environmental fluctuations critical for 24/7 operational environments. The **low-profile design** allows for easy installation in tight server chassis, while the **288-pin interface** ensures backward and forward compatibility with a wide array of server motherboards. Whether deployed in a single-socket workstation or a multi-node cluster, this **32GB (4x8GB) RDIMM kit** delivers a perfect blend of speed, reliability, and scalability, making it an excellent choice for administrators seeking to future-proof their infrastructure with high-performance, low-latency memory solutions.

The **SK Hynix HMA81GU6JR8N-XN** is a 32GB (4x8GB) DDR4 PC4-3200 (2133MT/s) ECC Registered (RDIMM) memory module designed for server and workstation use. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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1. **High Capacity and Scalability**

The 32GB configuration (4x8GB) provides substantial memory for demanding workloads such as virtualization, databases, and enterprise applications. It allows for easy expansion if additional RAM is needed later, as long as the motherboard and server support it.

2. **ECC and Registered (RDIMM) Features**

- **ECC (Error-Correcting Code):** Protects against data corruption by detecting and correcting single-bit errors, which is critical for servers where data integrity is non-negotiable.

- **Registered (RDIMM):** Reduces load on the memory controller by buffering commands, improving stability and performance in multi-socket or high-channel-count systems. This is particularly useful in enterprise servers with multiple CPU sockets.

3. **Compatibility with DDR4-2133 (PC4-3200) Standards**

The module operates at **2133MHz**, which is a standard speed for many server platforms. While it is not the fastest DDR4 speed (e.g., DDR4-3200 or DDR4-4000), it strikes a balance between performance and compatibility. It will work seamlessly in systems that support DDR4-2133, including many mid-range and high-end servers.

4. **Reliability and Durability**

SK Hynix is a reputable manufacturer known for producing high-quality memory modules. The RDIMM design and ECC features contribute to long-term reliability, which is essential for servers that operate 24/7.

5. **Cost-Effective for Enterprise Use**

Compared to higher-speed or lower-latency modules (e.g., LRDIMM or DDR4-3600), this module offers a good balance of performance and price. It is often more affordable than premium server memory while still meeting enterprise-grade requirements.

6. **Low Latency (CL15)**

The **CAS latency of 15** is reasonable for server-grade memory, ensuring that the module does not become a bottleneck in most workloads. Lower latency modules (e.g., CL13 or CL14) may offer slight performance gains, but the difference is often negligible in server environments where throughput and stability are prioritized.

7. **Widely Available and Easy to Source**

As a standard RDIMM module, it is easy to find in bulk or retail, making it a practical choice for IT administrators or businesses looking to upgrade their server infrastructure.

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1. **Not the Fastest DDR4 Speed**

The module operates at **DDR4-2133 (PC4-3200)**, which is slower than newer server-grade speeds like **DDR4-3200 (PC4-25600), DDR4-3600, or DDR5**. While this speed is sufficient for many workloads, it may not be optimal for CPU-bound tasks or applications that benefit significantly from higher memory speeds (e.g., some database workloads or AI/ML tasks). If the server supports higher speeds, upgrading to a faster module could yield measurable performance improvements.

2. **Limited to DDR4-2133 Compatibility**

If the server or motherboard only supports **DDR4-2400 or higher**, this module may not be usable without downgrading performance. Always verify compatibility with the system s memory controller and BIOS settings.

3. **RDIMM Requires Specific Server Platforms**

RDIMMs are designed for servers with multiple DIMM slots and often require **registered memory controllers**. They are not compatible with consumer-grade motherboards or systems that use **UDIMMs (Unbuffered DIMMs)**. This limits their use to enterprise servers, workstations, or high-end desktops with server-grade chipsets.

4. **No Low-Power or LRDIMM Options**

This is a standard RDIMM and does not include features like **Low-Power RDIMMs (LPDDR4)** or **Load-Reduced DIMMs (LRDIMMs)**, which are designed for energy efficiency in large-scale servers. If power consumption is a concern (e.g., in data centers with high rack densities), these alternatives may be preferable.

5. **Potential for Higher Latency in Multi-Channel Configurations**

While the CL15 latency is reasonable, in multi-channel setups (e.g., dual-channel or quad-channel), the overall latency can increase due to the registered design. This is less of an issue in servers where throughput is prioritized over raw speed, but it may not be ideal for latency-sensitive applications.

6. **No Integrated Heat Spreaders (IHS) or Cooling Enhancements**

Unlike some high-end server memory modules, this module does not come with an integrated heat spreader or additional cooling features. While DDR4 modules generally do not overheat, in extreme environments (e.g., high ambient temperatures), this could be a minor consideration.

7. **Vendor Lock-In Potential**

Some server manufacturers or data center providers may have preferred memory partners, leading to potential vendor lock-in. While SK Hynix is a major player, ensuring compatibility with specific server models (e.g., Dell PowerEdge, HP ProLiant, Lenovo ThinkSystem) is important to avoid issues.

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The **SK Hynix HMA81GU6JR8N-XN** is a solid choice for **enterprise servers, workstations, or high-end desktops** that require **32GB of ECC Registered DDR4 memory at 2133MHz**. It excels in environments where **data integrity, reliability, and scalability** are critical, such as virtualization hosts, database servers, or file servers. The module s RDIMM and ECC features ensure stability, while its standard DDR4-2133 speed provides a balance between performance and compatibility.

However, if the server supports **higher memory speeds (e.g., DDR4-3200 or DDR4-3600)**, upgrading to a faster module could improve performance for CPU-bound or latency-sensitive workloads. Additionally, if the system is **multi-socket or requires low-power memory**, alternatives like LRDIMMs or LPDDR4 may be more suitable.

For most **mid-range to high-end server deployments**, this module is a **cost-effective and reliable option** that meets enterprise-grade requirements without unnecessary complexity.

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- You need **32GB of ECC Registered DDR4 memory** for a server or workstation.

- Your system **supports DDR4-2133 (PC4-3200)** and requires RDIMMs.

- You prioritize **reliability, scalability, and data integrity** over raw speed.

- You are working within a **budget-conscious enterprise environment**.

- Your server supports **DDR4-3200 or higher**, and you want better performance for CPU-intensive tasks.

- You need **low-power memory (LPDIMM/LRDIMM)** for energy efficiency in large-scale deployments.

- You are using a **consumer-grade motherboard** that does not support RDIMMs (in which case UDIMMs would be needed).

- You require **lower latency (e.g., CL13 or CL14)** for specific applications.

For most **standard server deployments**, this module is a **high-quality, dependable choice** that delivers excellent value for money. Always verify compatibility with your specific hardware before purchasing.

Details:

SK Hynix 32GB 4x8GB DDR4 PC4-3200AA DIMM Server RAM Modules.

part #: hma81gu6jr8n prices

• $88.88-$750.00

specifications servermemor:

• brand: Sk Hynix
• mpn: Hma81gu6jr8n-xn
• form factor: Dimm
• type: Ddr4 Sdram
• total capacity: 32 Gb
• capacity per module: 8 Gb
• number of pins: 288
• bus speed: Pc4-3200aa

payments servermemor:

• credit card: Visa
• wallet: Google-pay
• other

returns servermemor:

• policy: No Returns

seller servermemor:

• # reviews: 7
• rating: 100.0%
• city: Clinton Township, Michigan

shipping servermemor:

• transit: 4-9 Days
• carrier: USPS
• service: USPS Ground Advantage
• cost: $5.45
• class: Standard
• type: Calculated

offer servermemor:

• quantity: 1
• options: Ship-to-home
• started: April 25, 2026
• sold: 0
• availability: In Stock
• best offers: True

general servermemor:

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

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