
( Brand: Hpe ), ( Manufacturer Part Number: P06035-H21 ), ( Model: P06035-H21 P06035-B21 P21676-001 P11446-0A1 ), ( Total Capacity: 64 Gb ), ( Seller Warranty: 1 Year Seller Warranty ), ( Rank: Dual Rank ), ( Item Length: 133mm ), ( Memory Features: Ecc Memory ), ( California Prop 65 Warning: No ), ( Form Factor: Rdimm ), ( Type: Ddr4 Sdram ), ( Unit Type: Unit ), ( Cas Latency: Cl22 ), ( Technology: Hpe Smartmemory ), ( Voltage: 1.2v ), ( Item Height: 30mm ), ( Number Of Pins: 288 ), ( Bus Speed: Pc4-25600 ), ( Country Of Origin: China )
The **Hynix (SK Hynix) P06035-H21 64GB 2Rx4 DDR4 RDIMM** is a high-performance, enterprise-grade memory module designed to deliver exceptional reliability, speed, and efficiency in demanding server and data center environments. Part of SK Hynix s **HMAA8GR7AJR4N-XN** series, this **256GB-capable (2Rx4) RDIMM** module operates at a robust **DDR4-3200MHz** clock speed, optimized for next-generation Intel Xeon Scalable and AMD EPYC processors. With a **PC4-25603** (25.6 GT/s) data transfer rate, it ensures seamless data throughput, making it ideal for high-performance computing (HPC), virtualization, cloud infrastructure, and mission-critical workloads where low latency and sustained performance are paramount.
Built with **240-pin RDIMM (Registered DIMM) architecture**, this module features **four 16GB (2Rx4) DRAM chips** per rank, providing a total of **64GB per module** while maintaining compatibility with dual-rank configurations for enhanced scalability. The **ECC (Error-Correcting Code) functionality** ensures data integrity by detecting and correcting single-bit errors on the fly, reducing the risk of system crashes and data corruption in fault-tolerant environments. Additionally, the module incorporates **buffered memory technology**, which helps stabilize signal integrity over longer memory channels, making it suitable for high-density server configurations.
SK Hynix s **HMAA8GR7AJR4N-XN** series is engineered with **low-power, high-efficiency DRAM chips**, supporting **JEDEC-standard DDR4-3200MHz** operation with optimized power consumption, which is critical for energy-efficient data centers. The module adheres to strict **enterprise-grade reliability standards**, including **100% burn-in testing** and **extended temperature tolerance** (typically operating between **0 C to 85 C**), ensuring long-term stability even under sustained heavy workloads. Its **XMP (Extreme Memory Profile) compatibility** allows for overclocking in supported systems, though it is primarily optimized for default DDR4-3200MHz performance in production environments.
Designed for **24/7 uptime**, this RDIMM module is fully compatible with **Intel Xeon Scalable (Cascade Lake, Cooper Lake, Ice Lake, Sapphire Rapids) and AMD EPYC (Rome, Milan, Genoa) processors**, making it a versatile choice for modern server platforms. The **2Rx4 configuration** allows for seamless expansion, enabling administrators to scale memory capacity efficiently without compromising performance. Whether deployed in **virtualized environments, database servers, or AI/ML workloads**, this module ensures consistent, high-speed memory access, reducing latency and improving overall system responsiveness.
For data centers prioritizing **cost efficiency and performance**, the **Hynix P06035-H21 64GB DDR4-3200MHz RDIMM** offers an excellent balance of speed, reliability, and scalability. Its **low-latency architecture**, **ECC protection**, and **enterprise-grade durability** make it a trusted choice for organizations demanding peak performance in high-demand computing scenarios. With SK Hynix s reputation for innovation and quality, this module is a dependable solution for next-generation server deployments.
### **Pros and Cons of the Hynix HMAA8GR7AJR4N-XN (64GB, 2Rx4, PC4-25600, DDR4-3200MHz RDIMM)**
#### **Pros:**1. **High Capacity and Density** The 64GB capacity is ideal for high-end servers, workstations, or enterprise workloads requiring large memory pools. The 2Rx4 configuration (two ranks, four chips per rank) balances performance and density efficiently.
2. **Registered DIMM (RDIMM) Design** RDIMMs are optimized for multi-socket servers, reducing bus contention and improving stability in high-channel-count systems. They are also more cost-effective than LRDIMMs for many use cases.
3. **DDR4-3200MHz Speed** The 3200MHz speed provides better performance than standard DDR4-2400 or DDR4-2666 modules, which can be beneficial for latency-sensitive applications like virtualization, databases, or high-performance computing (HPC).
4. **Low Power Consumption (AA Rating)** The "AA" (Advanced Application) rating indicates lower power usage compared to standard DDR4 modules, reducing heat generation and improving efficiency in data centers.
5. **Reliability and Compatibility** Hynix is a reputable manufacturer with a strong track record in memory modules. This module is designed for enterprise-grade systems, ensuring better longevity and compatibility with major server platforms (e.g., Dell EMC PowerEdge, HP ProLiant, Lenovo ThinkSystem).
6. **Scalability** The 64GB size allows for easy expansion in systems supporting multiple DIMM slots, making it suitable for scaling memory-intensive workloads without frequent upgrades.
7. **Support for ECC** While not explicitly stated, most RDIMMs from Hynix in this tier are ECC-enabled, which is critical for data integrity in servers and workstations handling critical workloads.
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#### **Cons:**1. **High Cost** Enterprise-grade RDIMMs, especially high-speed variants like this one, are significantly more expensive than consumer DDR4 modules. The price per GB is much higher than standard desktop RAM.
2. **Limited Desktop Compatibility** This module is designed for server/workstation platforms and may not be compatible with consumer motherboards, which typically require non-registered (UDIMM) or SO-DIMM modules. Always verify compatibility with your system s BIOS/UEFI and manufacturer support.
3. **Overkill for Consumer Use** Unless you are running a server, virtualization host, or a high-end workstation (e.g., for video editing, 3D rendering, or AI training), the performance gains from DDR4-3200 RDIMMs may not justify the cost compared to standard DDR4-3200 UDIMMs.
4. **Power and Cooling Requirements** Higher-capacity and higher-speed modules generate more heat. While the AA rating helps, you may need adequate cooling in your system to prevent throttling or instability.
5. **Vendor Lock-In Risk** Some server manufacturers may require specific memory configurations or support contracts, limiting flexibility if you later switch vendors or upgrade hardware.
6. **Potential for Overprovisioning** If your workload does not fully utilize 64GB of RAM, you may end up paying for unused capacity. For example, a single VM or application may not need this much memory, leading to inefficient resource allocation.
7. **Lead Times and Availability** Enterprise memory modules, especially high-capacity or high-speed variants, can have longer lead times due to demand fluctuations in the server market. Prices may also be volatile.
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### **Conclusion:**The **Hynix HMAA8GR7AJR4N-XN (64GB, DDR4-3200MHz RDIMM)** is an excellent choice for **enterprise servers, virtualization hosts, high-performance workstations, or data center workloads** where reliability, scalability, and performance are critical. Its RDIMM design, ECC support (likely), and 3200MHz speed make it well-suited for environments where memory bandwidth and stability are prioritized over cost.
However, for **consumer desktops, gaming PCs, or general-purpose workstations**, this module is **overkill and unnecessarily expensive**. In such cases, standard DDR4-3200 or DDR4-3600 UDIMMs (unbuffered) would offer better value without sacrificing performance for most use cases.
If you are certain this module fits your system s requirements and budget, it is a **strong, high-quality investment** for professional or server-grade applications. Otherwise, consider alternatives based on your specific needs.
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### **Recommendation:** - **Buy this module if:**- You are building or upgrading a **server, workstation, or virtualization platform**.
- Your system supports **RDIMMs** and requires **64GB of memory**.
- You need **DDR4-3200MHz performance** for latency-sensitive workloads (e.g., databases, VMs, HPC).
- You prioritize **reliability, ECC support, and enterprise-grade components**.
- **Avoid this module if:**- You are using a **consumer desktop or gaming PC** (UDIMMs are the right choice).
- Your workload does not require **high memory capacity or speed** (e.g., office tasks, light gaming).
- You are on a **tight budget**, as cheaper UDIMMs or lower-capacity RDIMMs may suffice.
- Your system s **BIOS or manufacturer does not support this specific module** (always check compatibility).
For most users, **prioritize compatibility and cost efficiency** before investing in high-end server memory. If you are unsure, consult your system s documentation or manufacturer support to confirm compatibility.
Photos available upon request. Units on hand and ready to ship from the US. Tech buyer specialize in new refurbished server, storage networking hardware. Pulled from functioning servers.
HYNIX 64GB 1 64GB 2RX4 PC4-25600AA-R DDR4-3200MHZ RDIMM HMAA8GR7AJR4N-XN.