SK HYNIX RNAB07K6YGWML Ram HMA81GU6DJR8N-XU 1X8GB DDR4 2666MHZ

( Brand: Sk Hynix ), ( Manufacturer Part Number: RNAB07K6YGWML ), ( Model: HMA81GU6DJR8N-XU ), ( Clock Speed: 2666mhz ), ( Memory Type: Ddr4 ), ( Ram Size: 8gb ), ( Serial Number: Hma81gs6afr8n-uhn0ac724 )

Review SK HYNIX 8gb Ram Ddr4 2666mhz

The **SK Hynix RNBA07K6YGWML-HMA81GU6DJR8N-XU 8GB (1x8GB) DDR4 RAM Module** is a high-performance, single-rank, unbuffered (UDIMM) memory kit designed to deliver exceptional speed, reliability, and efficiency for modern computing systems. Engineered with SK Hynix s advanced semiconductor technology, this **DDR4 SDRAM module** operates at a robust **2666 MHz** clock speed, ensuring seamless multitasking, faster data transfer rates, and improved responsiveness in demanding applications such as gaming, content creation, video editing, and professional workloads. The **8GB capacity (1x8GB configuration)** provides a balanced yet scalable solution for systems requiring additional memory without the complexity of dual-channel setups, making it an ideal choice for mid-range PCs, workstations, and gaming rigs where single-channel performance is sufficient.

Built with **low-power, high-efficiency DRAM chips**, this module adheres to strict quality and stability standards, ensuring long-term reliability and minimal heat generation. The **2666 MHz frequency** is optimized for compatibility with a wide range of motherboards featuring **DDR4 DIMM slots**, particularly those supporting **DOCP (Dram OverClocking Profile)** or **XMP (Extreme Memory Profile)** for easy overclocking if the platform allows. The **single-rank (1Rx8) architecture** simplifies installation and reduces latency compared to dual-rank modules, making it a practical choice for users who prioritize performance without the need for dual-channel redundancy. Additionally, SK Hynix s rigorous testing processes guarantee low failure rates, ensuring consistent performance under sustained workloads.

This RAM module is particularly well-suited for **Intel 8th and 9th Generation Core processors (Coffee Lake and Comet Lake)** as well as **AMD Ryzen 2000 and 3000 series CPUs**, where **DDR4-2666MHz** is a standard memory speed. Its **288-pin DIMM form factor** ensures compatibility with most modern motherboards, while its **non-ECC (non-error-correcting code) design** makes it a cost-effective alternative for general-purpose use, though users requiring data integrity in server or enterprise environments may opt for ECC variants. The **XU suffix** indicates that this module is part of SK Hynix s high-quality, performance-optimized lineup, often favored by system builders for its reliability and consistent benchmarks.

Whether deployed in a **gaming PC, productivity workstation, or media editing station**, this **SK Hynix DDR4-2666MHz RAM** delivers a harmonious blend of speed, efficiency, and compatibility, ensuring that your system operates at peak performance without unnecessary bottlenecks. Its straightforward single-rank configuration also simplifies upgrades, making it a versatile and practical addition to any modern build.

The SK Hynix RAM module **HMA81GU6DJR8N-XU (RN807K6YGWML)** is a 8GB (1x8GB) DDR4 memory kit running at 2666MHz. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros**

1. **Reliability and Brand Reputation**

SK Hynix is a well-established manufacturer known for producing high-quality memory modules. Their components are widely used in both consumer and enterprise systems, ensuring stability and compatibility with most motherboards and CPUs.

2. **Compatibility with a Wide Range of Systems**

DDR4-2666MHz is a common speed for mid-range and budget builds, making this RAM suitable for a variety of platforms. It works well with Intel and AMD CPUs that support DDR4, including many 9th to 13th Gen Intel CPUs and Ryzen 2000/3000/5000 series processors. It is also compatible with most motherboards that support DDR4-2666MHz, including B-series, H-series, and some X-series chipsets.

3. **Single-Rank, Single-Channel Configuration**

- Budget builds or older systems where dual-channel support may not be available or necessary.

- Lightweight tasks like office work, web browsing, or basic gaming (though modern games benefit from dual-channel).

- Systems where memory capacity is prioritized over speed (e.g., running multiple applications simultaneously without needing high bandwidth).

4. **Cost-Effective**

This module is priced affordably compared to higher-capacity or higher-speed alternatives. It provides 8GB of usable memory without the premium cost of 16GB or 32GB kits, making it a practical choice for users who don t need excessive RAM.

5. **Low Power Consumption**

DDR4-2666MHz modules typically consume less power than higher-speed variants (e.g., DDR4-3200MHz or DDR4-3600MHz), which can contribute to slightly better energy efficiency in power-hungry systems.

6. **No Overclocking Required**

The module operates at its rated speed (2666MHz) without requiring manual overclocking, reducing the risk of instability or compatibility issues that can arise from pushing memory beyond its specifications.

7. **Widely Available**

This specific part number is stocked by many retailers, making it easy to purchase without long wait times or compatibility concerns.

---

### **Cons**

1. **Single-Channel Limitation**

The biggest drawback is that this is a single-rank, single-channel module. Modern systems, especially those running demanding applications (e.g., video editing, 3D rendering, or high-end gaming), benefit significantly from dual-channel memory. Single-channel configurations can lead to:

- Reduced bandwidth and memory throughput, which may cause bottlenecks in CPU-intensive tasks.

- Lower performance in multi-threaded applications where dual-channel memory can double the effective bandwidth.

- Slower load times in games that utilize memory bandwidth heavily (e.g., modern AAA titles).

2. **Limited Upgrade Path**

If you later decide to upgrade your RAM capacity, you ll need to purchase additional modules to achieve dual-channel performance. Adding a second 8GB module (for 16GB total) would require checking for compatibility with your motherboard s memory slots and ensuring the new modules match the existing one in speed and timing.

3. **Lower Performance in High-End Tasks**

- Running multiple demanding applications simultaneously (e.g., video editing software browser tabs background processes).

- High-resolution gaming or virtualization (e.g., running multiple VMs).

- Future-proofing, as newer applications and operating systems may require more memory.

4. **No XMP/DOCP Support (Likely)**

Most SK Hynix DDR4 modules do not support XMP (Extreme Memory Profile) or AMD s DOCP (Dynamic Overclocking Control Profile), meaning you cannot easily overclock the RAM beyond its rated speed. This limits performance tuning unless your motherboard allows manual overclocking, which can be risky.

5. **Potential for Outdated Technology**

DDR4-2666MHz is now considered mid-range or slightly outdated compared to newer DDR4-3200MHz or DDR4-3600MHz modules. While it may not be a significant issue for basic use, it could limit performance in systems where higher memory speeds are available.

6. **No ECC Support**

- Server or workstation applications where data integrity is critical.

- Systems running Linux or other operating systems that require ECC memory for stability.

---

### **Conclusion**

The **SK Hynix HMA81GU6DJR8N-XU (8GB DDR4-2666MHz)** is a solid, reliable choice for users who prioritize affordability, simplicity, and compatibility over raw performance. It is well-suited for:

- Budget builds or systems where single-channel memory is acceptable.

- Lightweight tasks such as office work, web browsing, or entry-level gaming.

- Users who do not require high memory bandwidth or future-proofing.

However, for users who plan to engage in demanding tasks (e.g., gaming, content creation, or multi-tasking), the single-channel limitation and lower memory speed may become noticeable. In such cases, investing in a dual-channel kit (e.g., 16GB or 32GB DDR4-3200MHz or higher) would provide better long-term performance and flexibility.

---

### **Recommendation**

- You are building a budget system or replacing existing RAM in an older machine.

- Your use case involves light to moderate workloads (e.g., browsing, office work, casual gaming).

- You cannot or do not want to upgrade to dual-channel memory.

- You prioritize reliability and compatibility over raw performance.

- You plan to game or run demanding applications where dual-channel memory would provide a noticeable performance boost.

- You want to future-proof your system with higher memory capacity (e.g., 16GB or 32GB) and speed (e.g., DDR4-3200MHz or DDR4-3600MHz).

- Your motherboard supports dual-channel, and you can afford to purchase a second module to pair with this one.

- You are building a system that will run for several years, as DDR4-2666MHz may feel outdated sooner than higher-speed alternatives.

For most modern builds, a **dual-channel DDR4-3200MHz or DDR4-3600MHz kit** (e.g., 16GB or 32GB) would be a better long-term investment, even if it costs slightly more. However, if your budget is tight and you are certain that single-channel memory will suffice, this SK Hynix module is a safe and practical choice.

Details:

Functionality: This device is used in good condition. Thoroughly inspected by experts. Apple and Android. All Other Tech.

Wiped of all data. SK Hynix HMA81GU6DJR8N-XU 8GB 1x8GB RAM DDR4 2666MHz RNAB07K6YGWML: $34.99. There are some scratches or scuffs from everyday use. Condition is thoroughly assessed.

Please view our close up photos, as these are taken of the actual item being offered for sale. Specifications: Collection Computer Part Sub-Collection RAM Brand SK Hynix model HMA81GU6DJR8N-XU MPN RNAB07K6YGWML Memory Size 8GB 1x8GB Type DDR4 Speed 2666MHz Condition Good UPC 6 Serial# HMA81GS6AFR8N-UHN0AC724 Cosmetic condition: This device is used in good condition. This device is using good condition. Your New Home for, Pre-owned Tech: Get the best deals on everything from smartphones, tablet's, laptops, camera gear, and even gaming gear.

Save money, reduce your impact, while enjoying the same great tech. Devices have not been reassembled. Rigorously tested and cleaned.

part #: rnab07k6ygwml prices

• $30.00-$48.37

specifications servermemor:

• brand: Sk Hynix
• mpn: Rnab07k6ygwml
• model: Hma81gu6djr8n-xu
• clock speed: 2666mhz
• memory type: Ddr4
• ram size: 8gb
• serial number: Hma81gs6afr8n-uhn0ac724

offer servermemor:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: April 8, 2026
• quantity: 1

payments servermemor:

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

general servermemor:

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

shipping servermemor:

• class: Standard
• transit: 3-8 Days
• service: USPS Ground Advantage
• cost: $0.00
• carrier: USPS
• type: Fixed

returns servermemor:

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

seller servermemor:

• rating: 99.5%
• city: Orlando, Florida
• # reviews: 3217

Sk Hynix RNAB07K6YGWML Is Similar To:

• 06200201 Huawei Sk Hynix 32gb (23.2% similar) Hawaii Sk Hynix 32GB PC4-2133P DDR4 HMA84GR7MFR4N-TF server memory 4GX72, reg,eccl, 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 (32.4% 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 (28.9% similar) Frau 46C7423. Opt 46C7420...(November 6th, 2017)
• 662609-572 Hynix Sk P-n Hmt351u7cfr8c-pb (32.1% similar) Sk Hynix P/N 572HMT351U7CFR8C-PB 4GB 2RX8 PC3-12800WE...(February 12th, 2018)
• 672042060054 Hynix Sk Ecc Reg Memory Module (23.9% 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 eccl reg memory module storage capacity: technology: dram 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 (28.6% 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 (21.7% 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 (26.8% 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 (22.5% similar) If it is not in the picture, does come with item unless stated...(March 20th, 2017)
• 809079-581 Hp Sk Hynix 8gb (26.1% similar) Eccl ram modules are for servers, workstations and a few compatible motherboards. Details: 1 x 8GB DDR4 hp 1RX8 PC4-2400T 288-PIN eccl 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 (30.2% similar) A buyers attempt to use the equipment purchased in special configuration or application...(July 29th, 2018)