SK HYNIX HMAA8GRTMJR4N-WM Samsung Dimm Ecc Server Memory 640GB 10X64GB DDR4-2933

( Brand: Sk Hynix ), ( Manufacturer Part Number: HMAA8GRTMJR4N-WM ), ( Form Factor: Rdimm ), ( Type: Ddr4 Sdram ), ( Number Of Modules: 10 ), ( Total Capacity: 640gb ), ( Capacity Per Module: 64 Gb ), ( Number Of Pins: 288 ), ( Bus Speed: Pc4-2933y ), ( Memory Features: Ecc Memory, Registered )

Review SK HYNIX Samsung 640gb Ddr4-2933 Dimm Ecc Registered Server Memory

The **SK Hynix/Samsung HMMA8GRTMJR4N-WM 640GB (10x64GB) DDR4-2933 ECC Registered DIMM** is a high-performance, enterprise-grade memory module engineered for mission-critical server applications where reliability, scalability, and sustained throughput are paramount. Designed to meet the rigorous demands of modern data centers, this **10-rank, 64GB-per-rank** configuration delivers an impressive total capacity of **640GB** across a single DIMM slot, making it an ideal solution for high-density workloads such as virtualization, large-scale databases, AI/ML training, and high-performance computing (HPC). Built on **Samsung s advanced 16Gb DDR4 DRAM technology**, each rank incorporates **low-power, high-density NAND-like memory cells** optimized for endurance, ensuring prolonged operational stability even under continuous heavy loads. The **DDR4-2933 MHz** clock speed, paired with **ECC (Error-Correcting Code) functionality**, provides both speed and data integrity, automatically detecting and correcting single-bit errors while mitigating the risk of catastrophic system failures caused by uncorrected memory corruption.

This **Registered DIMM (RDIMM)** module is specifically engineered for compatibility with **Dual Inline Memory Module (DIMM) slots** found in enterprise servers, offering seamless integration with platforms supporting **DDR4-2933 MHz** memory profiles. The **10-rank architecture** allows for balanced data distribution across the module, reducing latency and improving bandwidth efficiency, which is critical for applications requiring low-latency access to large datasets. Additionally, the **low-power design** ensures energy efficiency, helping to minimize operational costs while maintaining peak performance an essential consideration for data centers aiming to optimize both performance and sustainability. The module adheres to **JEDEC standards**, ensuring broad compatibility with major server manufacturers, including Dell, HP, Lenovo, and IBM, while also supporting advanced memory features such as **Memory Upgrade Path (MUP)** for future scalability.

Beyond raw capacity and speed, this memory module incorporates **enhanced error detection and correction mechanisms**, including **ECC redundancy**, which is vital for maintaining data consistency in fault-tolerant environments. The **WM (Write-Mask) variant** further enhances reliability by preventing data corruption during write operations, a feature particularly valuable in high-write environments like transactional databases or real-time analytics. The **heat-spreader design** ensures uniform thermal distribution, reducing the risk of thermal throttling and extending the lifespan of the module under sustained workloads. Whether deployed in **cloud infrastructure, financial trading systems, or scientific computing clusters**, this **640GB DDR4-2933 ECC RDIMM** delivers a robust, high-capacity solution that balances speed, endurance, and enterprise-grade reliability making it a cornerstone for next-generation server deployments.

**Pros and Cons of the SK Hynix/Samsung HMMA8GRTMJR4N-WM 640GB (10x64GB) DDR4-2933 ECC Server Memory**

### **Pros**

1. **High Capacity and Scalability**

This memory kit offers a substantial 640GB of total capacity in a single installation, which is ideal for large-scale servers, data centers, or high-performance computing (HPC) workloads. The modular design (10x64GB DIMMs) allows for easy upgrades or replacements if needed.

2. **DDR4-2933 Speed**

DDR4-2933 provides a good balance between speed and power efficiency compared to higher-speed variants like DDR4-3200 or DDR5. It is well-suited for most enterprise workloads, including virtualization, databases, and general server operations, without requiring excessive power consumption.

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

ECC memory is critical for servers, as it detects and corrects single-bit errors, reducing data corruption risks. This is particularly important for mission-critical applications, financial systems, or any environment where data integrity is non-negotiable.

4. **Registered (Buffered) Design**

The memory is registered (often referred to as "registered ECC" or "buffered"), which helps stabilize memory signals on the motherboard, reducing latency and improving reliability in multi-socket or high-channel-count systems. This is a common requirement for enterprise servers.

5. **Compatibility with Enterprise Platforms**

This kit is designed for server-grade hardware, meaning it is likely to be compatible with major server motherboards from vendors like Dell, HP, Lenovo, and custom-built systems using Intel Xeon or AMD EPYC CPUs. It adheres to industry standards for server memory.

6. **Reliability and Longevity**

Server-grade memory is built to withstand continuous operation, higher temperatures, and extended lifespans compared to consumer-grade RAM. The use of high-quality components from SK Hynix and Samsung further enhances reliability.

7. **Cost-Effective for Large Deployments**

While the upfront cost per GB may be higher than consumer memory, the long-term reliability and performance justify the investment for businesses running large-scale operations. Bulk purchases can also yield better pricing.

---

### **Cons**

1. **High Upfront Cost**

The total cost of 640GB of server-grade ECC memory is significantly higher than consumer-grade DDR4 memory. This can be a barrier for small businesses or individuals running non-critical workloads. For example, a similar capacity in consumer memory might cost a fraction of the price.

2. **Limited Use Case for Non-Server Workloads**

This memory is optimized for servers and enterprise environments. Using it in a desktop PC or non-server application (e.g., gaming, content creation with non-server-grade motherboards) may not provide meaningful benefits and could even cause compatibility issues. Most consumer motherboards do not support registered ECC memory.

3. **Power and Heat Considerations**

DDR4-2933 is power-efficient compared to higher-speed variants, but a large installation like this (especially in multi-socket servers) will still draw more power than consumer systems. Proper cooling and power supply capacity must be ensured to avoid instability.

4. **Potential for Overkill**

If the workload does not require 640GB of RAM (e.g., a small business server or a single-user workstation), this kit may be unnecessarily expensive. Smaller configurations (e.g., 128GB or 256GB) could suffice for many applications.

5. **Vendor Lock-In Risks**

Server memory is often tied to specific motherboard or CPU platforms. If the server hardware is upgraded or replaced, there may be compatibility concerns, especially if the new system requires different memory types (e.g., DDR5). Always verify compatibility with the manufacturer s documentation.

6. **No Future-Proofing for DDR5**

This is a DDR4 kit, and while DDR4 will remain relevant for several years, DDR5 is becoming the standard for newer server platforms. Upgrading to DDR5 in the future may require purchasing entirely new memory, adding to long-term costs.

7. **Complexity in Management**

Managing large memory installations in servers can be complex, especially in virtualized environments. Tools for memory allocation, error logging, and performance monitoring may be required, adding administrative overhead.

---

### **Conclusion**

The **SK Hynix/Samsung HMMA8GRTMJR4N-WM 640GB DDR4-2933 ECC server memory** is an excellent choice for **enterprise environments, data centers, high-performance computing, or large-scale virtualization deployments** where reliability, capacity, and error correction are paramount. Its registered design, high capacity, and compatibility with server-grade hardware make it a robust solution for mission-critical workloads.

However, for **small businesses, individual users, or non-server applications**, this kit is likely overkill due to its high cost and lack of practical benefits outside enterprise settings. In such cases, smaller or consumer-grade memory configurations would be more cost-effective.

If you are running a **large-scale server, database server, or HPC cluster**, this memory is a strong recommendation. For other use cases, carefully evaluate whether the investment aligns with your needs or if a more modest configuration would suffice.

- **Buy this memory if:** You are deploying a **high-capacity server, data center workload, or enterprise environment** where reliability, ECC support, and large memory pools are essential.

- **Avoid this memory if:** You are using a **consumer-grade PC, small business server, or workload that does not require 640GB of RAM**. In such cases, consider smaller ECC kits or consumer-grade DDR4 memory for better cost efficiency.

Details:

The DDR4 SDRAM technology, along with the PC4-2933Y bus speed, ensures reliable and fast data processing. The SK Hynix Samsung 640GB 10x64GB DDR4-2933 DIMM ECC Registered Server Memory is a high-performance memory kit designed for server applications. With a total capacity of 640GB spread across 10 64GB modules, this memory is ideal for boosting the speed and efficiency enterprise servers.

part #: hmaa8grtmjr4n prices

• $3499.99-$5500.00

specifications servermemor:

• brand: Sk Hynix
• mpn: Hmaa8grtmjr4n-wm
• form factor: Rdimm
• type: Ddr4 Sdram
• number of modules: 10
• total capacity: 640gb
• capacity per module: 64 Gb
• number of pins: 288
• bus speed: Pc4-2933y
• memory features: Ecc Memory, Registered

general servermemor:

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

shipping servermemor:

• type: Calculated
• cost: $0.00
• class: Standard
• carrier: USPS
• transit: 5-10 Days
• service: USPS Ground Advantage

returns servermemor:

• policy: No Returns

payments servermemor:

• credit card: Diners-club
• other
• wallet: Paypal

seller servermemor:

• rating: 100.0%
• # reviews: 64
• city: Cincinnati, Ohio

offer servermemor:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: March 4, 2026
• best offers: True

Sk Hynix HMAA8GRTMJR4N Is Similar To:

• 06200201 Huawei Sk Hynix 32gb (18.3% similar) Hawaii Sk Hynix 32GB PC4-2133P DDR4 HMA84GR7MFR4N-TF server memory 4GX72, reg,ecc, 288 pins, 36CH 2GX4, Hynix, HMA84GR7MFR4N-TF, tested, bag DDR4, 32GB,PC4-2133P,DDR4 condition used tested. As-is items are advertised as such and no warranty is available...(October 19th, 2017)
• 100-563-384 Sk Hynix In Casing Lot Sale (27.7% similar) This is a lot sale of 16 Sk Hynix 8GB 2RX4 PC3-12800R e2 memory in working condition fresh out service...(October 29th, 2018)
• 46c7420-mb Sk Hynix 46c7420 8gb (21.3% similar) Frau 46C7423. Opt 46C7420...(November 6th, 2017)
• 662609-572 Hynix Sk P-n Hmt351u7cfr8c-pb (24.4% similar) Sk Hynix P/N 572HMT351U7CFR8C-PB 4GB 2RX8 PC3-12800WE...(February 12th, 2018)
• 672042060054 Hynix Sk Ecc Reg Memory Module (34.3% similar) We back this testing up with a 30 day guarantee. Please with any questions or concerns. Sk Hynix 8GB HMA41GR7AFR4N-UH 1RX4 PC4-2400T DDR4 ecc reg memory module storage capacity: technology: sdram number of modules: 1 x chips organization: x4 bus speed: 2400MHZ DDR4-2400 PC4 data integrity check: ...(June 30th, 2018)
• 740617162158 Sk Hynix Free Shipping Never Opened Dell Memory (31.8% similar) Brand new, unopened dell memory 64GB 8X8GB DDR3 PC3-10600RTHIS is not for desktops condition: new capacity per module: 8 gb each, total of PC3-10600RMEMORY features: 2RX4, PC3-10600R 1333MHZ, this desktops...(May 7th, 2018)
• 740617216882 Sk Hynix Dell (18.8% similar) Po 10027MEMORY room gray shelf. To schedule a time if you are going pickup. Someone will need to be available sign for deliveries...(July 5th, 2018)
• 740617224184 Sk Hynix Dell 32gb (19.7% similar) Someone will need to be available sign for deliveries USPS 32GB Hynix PC3 box memory room. To schedule a time if you are going pickup...(January 11th, 2018)
• 78p1914 Sk Hynix Lot Of (17.5% similar) If it is not in the picture, does come with item unless stated...(March 20th, 2017)
• 809079-581 Hp Sk Hynix 8gb (20.5% similar) Ecc ram modules are for servers, workstations and a few compatible motherboards. Details: 1 x 8GB DDR4 hp 1RX8 PC4-2400T 288-PIN ecc registered -HMA41GR7AFR4N-UH ad P/N all memory sticks have been fully tested and are 100 functional...(February 7th, 2018)
• 840759-091 Sk Hynix Hpe Quad Rank Memory (30.5% similar) A buyers attempt to use the equipment purchased in special configuration or application...(July 29th, 2018)