
Hynix HMA81GS6AFR8N-UH 8GB DDR4 2400MHz Memory Sodimm Module
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AI Verdict
This 8GB DDR4 2400MHz SODIMM module is for laptop users needing a standard speed memory upgrade or replacement.
This 8GB DDR4 2400MHz SODIMM is a situational fit because its 2400MHz speed and 8GB capacity are standard for many older or entry-level laptops. It's a direct upgrade for systems with less RAM or a replacement for a faulty module, but it won't unlock higher performance for systems capable of faster memory speeds.
If your laptop supports it, look for DDR4 SODIMM with a speed of 3200MHz or higher and a lower CAS Latency for a more noticeable performance boost.
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Pros
- Provides 8GB of DDR4 memory, suitable for increasing a laptop's total RAM capacity.
- Operates at a standard 2400MHz speed (PC4-19200), matching many existing laptop configurations.
- Requires 1.2 Volts, which is the standard low voltage for DDR4 SODIMM modules.
- Manufactured by SK Hynix, a primary DRAM chip producer, indicating a foundational component quality.
- Widely compatible with various laptop brands including DELL, ASUS, HP, Lenovo, and Apple, provided the system supports DDR4 SODIMM.
Cons
- 2400MHz speed is entry-level for DDR4, not offering performance gains for systems supporting faster RAM.
- Single 8GB stick doesn't enable dual-channel memory unless paired with an identical module, which can limit performance.
- Non-ECC (Error-Correcting Code) memory, so it's not suitable for servers or workstations requiring error correction.
- No specified CAS Latency (CL) in the product data, which is a key performance metric for RAM.
Dimension Scores
The 2400MHz speed is a standard, entry-level speed for DDR4 SODIMM, not offering higher performance compared to faster modules.
This 1.2V DDR4 SODIMM is widely compatible with a broad range of laptops from major manufacturers like DELL, ASUS, HP, Lenovo, and Apple that support DDR4.
This is a standard JEDEC (Joint Electron Device Engineering Council) specification module with no advertised overclocking features or higher XMP profiles.
SK Hynix is a major DRAM manufacturer, and the product has a high 4.8/5 rating from over 1,700 reviews, suggesting consistent performance and low failure rates.
Best For
- Upgrading a laptop with an existing 8GB 2400MHz DDR4 module to 16GB total RAM.
- Replacing a failed 8GB DDR4 2400MHz SODIMM in a compatible laptop.
- Budget-conscious users looking for a basic memory capacity increase for everyday computing.
Not Recommended For
- High-performance gaming laptops or workstations that benefit from higher memory speeds (e.g., 3200MHz or faster).
- Users seeking to build a new system with optimal dual-channel memory performance from the start.
- Servers or critical applications requiring ECC memory for data integrity.
Watch Out For
- Mixing this Hynix module with a different brand or speed of RAM can lead to instability or force all modules to run at the slowest speed.
- Some users report that a RAM upgrade alone might not fix performance issues if the bottleneck is the CPU or GPU.
- The 2400MHz speed might be a downgrade if your laptop already supports faster DDR4 memory, potentially limiting overall system performance.
Full Specifications
| RAM | 8 GB DDR4 |
| ASIN | B0754185PH |
| Brand | SK Hynix |
| Color | Multicolor |
| Series | HMA81GS6AFR8N-UH |
| Voltage | 1.2 Volts |
| Item Weight | 0.01 ounces |
| Manufacturer | SK Hynix |
| Memory Speed | 19200 MHz |
| Item model number | HMA81GS6AFR8N-UH |
| Compatible Devices | Laptop |
| Product Dimensions | 1.18 x 3.94 x 0.08 inches |
| Computer Memory Size | 8 GB |
| Computer Memory Type | DDR4 SDRAM |
| RAM Memory Technology | DDR4 |
| Item Dimensions LxWxH | 1.18 x 3.94 x 0.08 inches |
| Is Discontinued By Manufacturer | No |
What Buyers Say
Users frequently purchase this Hynix 8GB 2400MHz module to expand their laptop's memory, often pairing it with an existing stick to reach 16GB total RAM. Many report successful installations and improved system responsiveness for everyday tasks and multitasking. The general sentiment is that it performs as expected for its specifications, without major performance complaints or compatibility headaches when matched correctly. Some discussions highlight the importance of matching existing RAM specs to avoid issues.
“I just needed another 8GB for my old Dell, popped this in, and now Chrome doesn't choke on 20 tabs. It just works, no fuss, exactly what I needed.”
Common Praise
- Easy to install in compatible laptops.
- System recognized the new memory without issues.
- Improved multitasking performance after installation.
- Functions reliably at the advertised 2400MHz speed.
- Cost-effective way to increase laptop RAM capacity.
Common Complaints
- Didn't significantly boost gaming frame rates, indicating a GPU or CPU bottleneck.
- Some users experienced minor instability when mixing with RAM of different brands or unverified specifications.
- No noticeable performance difference if the original RAM capacity was already sufficient for usage.
- The 2400MHz speed is not ideal for newer laptops that can utilize faster DDR4 modules.
Ownership Tips
- Check your laptop's existing RAM speed and voltage before buying to ensure compatibility and optimal performance.
- If you're adding this to an existing stick, verify the original module's CAS Latency if possible for best dual-channel operation.
- For older laptops, ensure your BIOS is updated to the latest version to prevent potential memory recognition issues.
- Don't expect this 2400MHz module to magically transform an underpowered laptop into a gaming powerhouse; it's for capacity and basic speed improvements.
Frequently Asked Questions
Is this RAM compatible with my laptop?
This module is DDR4 SODIMM, 2400MHz, and 1.2V. You need to check your laptop's specifications to ensure it uses DDR4 SODIMM and supports 2400MHz speed. It's compatible with many DELL, ASUS, HP, Lenovo, and Apple laptops.
Can I mix this with my existing RAM?
You can often mix RAM modules, especially if they have the same capacity, speed, and voltage. However, there's a small chance of compatibility issues, and all modules will operate at the speed of the slowest stick.
Will this make my laptop faster for gaming?
Adding more RAM can improve multitasking and reduce stuttering in some games if your current RAM is a bottleneck. However, if your CPU or GPU is the limiting factor, a RAM upgrade alone might not significantly boost gaming performance.
What does 2400MHz mean?
2400MHz refers to the operating speed of the memory, meaning it can process 2.4 billion cycles per second. This is an entry-level speed for DDR4 laptop memory.
Is Hynix a good brand for RAM?
SK Hynix is one of the world's largest manufacturers of DRAM chips, often supplying the chips found in modules from other well-known brands. They are a reputable manufacturer in the memory industry.
Buying Guide
When you're looking at laptop memory like this Hynix module, you need to know what your current laptop supports. Memory capacity (8GB here) determines how many applications you can run smoothly. The speed (2400MHz) affects how quickly your system can access data. Voltage (1.2V) is standard for DDR4, but older laptops might use 1.35V or 1.5V DDR3, which isn't compatible. Getting the right type and speed is crucial for stability and performance.
Capacity (8GB)
Think of capacity like the size of your desk. More capacity means you can have more applications open and switch between them without your computer slowing down to 'put things away' on your hard drive.
Type (DDR4 SODIMM)
This is the physical shape and technology of the memory stick. SODIMM means it's for laptops, and DDR4 is the generation. You can't put a DDR3 stick into a DDR4 slot, just like you can't put a square peg in a round hole.
Speed (2400MHz)
This is how fast the memory can transfer data. Imagine it as the speed of the conveyor belt on your desk. A faster belt moves information quicker, making your computer feel more responsive, especially for demanding tasks.
Voltage (1.2 Volts)
This is the power required for the memory to operate. DDR4 typically uses 1.2V. Using a module with the wrong voltage can damage components or prevent your system from booting.
Alternatives
If this 8GB 2400MHz module isn't enough, look for DDR4 SODIMM modules with higher capacities like 16GB or 32GB, and faster speeds such as 3200MHz or 3600MHz, ensuring your laptop's motherboard supports them.



