
Samsung M471A1K43CB1-CTD 8GB DDR4 PC4-21300, 2666MHZ, 260 PIN SODIMM, 1.2V, CL 19 laptop ram memory module
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AI Verdict
An 8GB DDR4 2666MHz CL19 SODIMM module operating at 1.2V, designed for laptop and compatible Synology NAS upgrades.
This 8GB 2666MHz DDR4 SODIMM module is a direct fit for most laptops requiring a memory upgrade and has a documented history of working in various Synology NAS models. Its 1.2V operation aligns with standard laptop power efficiency requirements.
If 8GB is insufficient for your workload, look for a 16GB or 32GB DDR4 SODIMM module with a similar 2666MHz speed and 1.2V voltage.
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Pros
- Operates at 1.2V, contributing to reduced energy consumption and heat generation in laptops.
- Provides 2666MHz speed, enabling faster data transfer for applications.
- Features a 260-pin SODIMM form factor, ensuring compatibility with a wide range of laptops.
- Confirmed by users to function without issues in various Synology NAS models like DS920+, DS720+, and DS224+.
- Backed by a lifetime warranty.
Cons
- The 8GB capacity may be limiting for professional video editing or extensive multitasking with resource-intensive applications.
- CL19 latency is standard but not optimized for high-performance gaming setups.
- Some users suggest matching speeds precisely when pairing with existing RAM to avoid potential compatibility issues, especially with slower 2133MHz modules.
Dimension Scores
The 2666MHz speed is standard for DDR4 laptop memory, and CL19 latency is typical, not offering performance advantages over similar modules.
Its 260-pin SODIMM form factor and 1.2V operation ensure broad compatibility with DDR4 laptops, and it has proven compatibility with specific Synology NAS models.
This is a standard JEDEC module with no advertised overclocking features or XMP profiles, making it unsuitable for performance tuning.
Samsung is a major memory manufacturer, and the module comes with a lifetime warranty, with many users reporting 'flawlessly working' performance over time.
Best For
- Upgrading a laptop with 2666MHz DDR4 SODIMM slots for improved general performance.
- Expanding memory in compatible Synology NAS devices like the DS720+ or DS224+.
- Students needing to enhance performance for research, document editing, and online learning platforms.
- Budget laptop owners seeking to boost multitasking capabilities without a significant investment.
Not Recommended For
- Gaming enthusiasts requiring lower latency and higher capacity for modern titles.
- Professional editors working with large video or audio files that demand high-capacity, high-speed RAM.
- Desktop computers, as it is a SODIMM module designed for laptops.
Watch Out For
- Mixing this 2666MHz module with existing 2133MHz RAM might lead to both modules operating at the slower 2133MHz speed, or potential instability.
- While compatible with many Synology NAS devices, some users report initial boot times of up to 4 minutes during the RAM test after installation.
- The 8GB capacity can become a bottleneck for users running multiple virtual machines or very demanding software simultaneously.
Full Specifications
| ASIN | B07F6HBK1N |
| Brand | Samsung |
| Item Weight | 0.64 ounces |
| Manufacturer | Samsung |
| Memory Speed | 2666 MHz |
| Item model number | M471A1K43CB1-CTD |
| Compatible Devices | Laptop |
| Product Dimensions | 9 x 6 x 1 inches |
| Computer Memory Size | 8 GB |
| RAM Memory Technology | DDR4 |
| Is Discontinued By Manufacturer | No |
What Buyers Say
Many users bought this 8GB Samsung module specifically for Synology NAS upgrades, reporting successful installations and no 'unofficial RAM' warnings, which is a common concern with Synology devices. The module is consistently described as working 'flawlessly' and being recognized immediately by systems. Some users noted that initial boot times after installation could be longer due to memory tests. The 1.2V operation is frequently highlighted for its energy efficiency.
“I just slapped this 8GB stick in my laptop and it just worked, no fuss, no errors, my old 4GB was choking everything. My Synology NAS also took it like a champ, no weird warnings or anything, finally got that extra breathing room.”
Common Praise
- System recognized the 8GB module immediately upon installation.
- Operates without generating 'unofficial RAM' warnings in Synology NAS devices.
- Passed memory tests successfully in Synology NAS units.
- Contributes to reduced power consumption due to its 1.2V operating voltage.
- Provides a noticeable performance boost for everyday laptop tasks.
Common Complaints
- Initial boot with new RAM can take several minutes as the system performs a memory test.
- Some users found that pairing it with existing slower RAM (e.g., 2133MHz) resulted in both modules running at the lower speed.
- The 8GB capacity can be insufficient for users running multiple demanding applications or virtual machines.
Ownership Tips
- The module runs cool even under sustained use, likely due to its 1.2V operation.
- Installation is straightforward, often taking only a few minutes for those familiar with laptop upgrades.
- Can significantly improve system responsiveness if upgrading from a lower capacity, especially for basic multitasking.
- The module's compatibility with Synology NAS devices makes it a popular, tested choice for those specific upgrades.
Frequently Asked Questions
Is this RAM compatible with desktop computers?
No, this is a 260-pin SODIMM module, which is designed specifically for laptops and All-in-One PCs, not desktop computers.
What is the voltage of this memory module?
The Samsung M471A1K43CB1-CTD operates at 1.2V.
Can I use this RAM in a Synology NAS?
Yes, users have successfully installed this 8GB Samsung module in various Synology NAS models like the DS920+, DS720+, and DS224+, often without warnings about unofficial RAM.
Will this RAM work if my laptop currently has 2133MHz RAM?
It might work, but both modules would likely operate at the slower 2133MHz speed. For optimal performance and compatibility, it's recommended to match the speed of your existing RAM.
Does this RAM support dual-channel performance?
Yes, if your machine has multiple RAM slots and supports dual-channel memory, this module can contribute to dual-channel performance when paired correctly.
Buying Guide
When buying laptop RAM, you need to match the physical size (SODIMM), the DDR generation (DDR4), and ideally the speed (MHz) and voltage (V) to your existing RAM or your laptop's specifications. If you mix speeds, your system will usually default to the slowest module's speed. Getting enough RAM for your tasks prevents your system from constantly swapping data to slower storage, which makes everything feel sluggish.
8GB Capacity
DDR4 Type
2666MHz Speed
260-pin SODIMM Form Factor
Alternatives
If you need more memory for demanding applications, look for DDR4 SODIMM modules with 16GB or 32GB capacity. For faster performance in gaming or specific workloads, consider modules with higher clock speeds (e.g., 3200MHz) and lower CAS Latency (e.g., CL16).



