SAMSUNG M471A1K43CB1-CTD 2666MHz Memory Modules (8GB, 1 x 8GB, DDR4, 2666 MHz, 260-Pin SO-DIMM, Black, Green)
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AI Verdict
This 8GB DDR4 2666MHz CL19 1.2V SO-DIMM module is for upgrading laptops or small form factor PCs that need a single stick of standard speed RAM.
This 8GB 2666MHz SO-DIMM is a straightforward upgrade for systems already running similar memory or those needing a basic capacity increase. Its standard specifications make it broadly compatible with many laptops and small form factor PCs. However, it won't offer performance gains beyond its specified speed and latency.
If you need more speed or lower latency, look for DDR4 SO-DIMM modules with 3200MHz or higher frequencies and CL16 or lower CAS Latency.
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Pros
- Operates at a standard 2666 MHz speed, matching many OEM laptop configurations.
- Requires only 1.2 Volts, adhering to the low-power standard for DDR4 SO-DIMM modules.
- Features a 260-pin SO-DIMM form factor, ensuring compatibility with most laptops and compact systems.
- Reported to work without issues in various devices, including Synology NAS units.
- Samsung's manufacturing often means broad compatibility with different chipsets.
Cons
- Single 8GB module limits dual-channel performance unless paired with an identical existing stick.
- CL19 CAS Latency is on the higher side for 2666MHz DDR4, meaning slightly slower response times compared to lower CL modules.
- No XMP profile support, as is typical for JEDEC standard SO-DIMM modules, limiting easy performance tuning.
- The 2666MHz speed is a common baseline, but not the fastest available for DDR4 SO-DIMM memory.
Dimension Scores
The 2666MHz speed and CL19 latency are standard for DDR4 SO-DIMM, offering average performance without being particularly fast.
As a Samsung JEDEC standard 260-pin SO-DIMM at 1.2V, it has broad compatibility with a wide range of laptops and small form factor PCs, including reported success in Synology NAS units.
This is a standard JEDEC module with no XMP profiles, meaning it's not designed for or capable of user-initiated overclocking beyond its rated 2666MHz speed.
Samsung memory is generally considered reliable, and the 4.8/5 rating from over 2,500 reviews suggests a low failure rate and consistent performance for users.
Best For
- Upgrading a laptop with an existing 8GB 2666MHz SO-DIMM to 16GB total.
- Replacing a failed 8GB 2666MHz SO-DIMM in a laptop or small form factor PC.
- Adding memory to a compatible Synology NAS or other embedded system that uses SO-DIMM.
Not Recommended For
- High-performance gaming laptops or workstations that benefit from higher frequency or lower latency RAM.
- Desktop PCs, as this is a 260-pin SO-DIMM module, not a 288-pin DIMM.
- Users looking to overclock their memory, as this is a standard JEDEC module with no XMP support.
Watch Out For
- Some users report confusion with the 'CTD' suffix, which indicates a 2666MHz speed bin, but matching exact part numbers is crucial for dual-channel stability.
- If your system already has a different speed or latency module, this 2666MHz CL19 stick will downclock to match the slowest module, negating potential speed benefits.
- The 'compatible: Desktop' spec in some listings is incorrect; this is a 260-pin SO-DIMM for laptops and small form factor devices.
Full Specifications
| RAM | 8 GB DDR4 |
| ASIN | B07JWG53DG |
| Brand | Samsung |
| Color | black / green |
| Series | M471A1K43CB1-CTD |
| Voltage | 1.2 Volts |
| Item Weight | 0.352 ounces |
| Manufacturer | Samsung |
| Memory Speed | 2666 MHz |
| Operating System | Windows 10 |
| Hardware Platform | PC |
| Item model number | M471A1K43CB1-CTD |
| Compatible Devices | Desktop |
| Product Dimensions | 3.4 x 1.6 x 0.3 inches |
| Computer Memory Size | 8 GB |
| Computer Memory Type | DDR4 SDRAM |
| RAM Memory Technology | DDR4 |
| Item Dimensions LxWxH | 3.4 x 1.6 x 0.3 inches |
| Is Discontinued By Manufacturer | No |
What Buyers Say
Many users bought this 8GB Samsung SO-DIMM to upgrade their laptops or small form factor PCs, often to match an existing stick for dual-channel operation. People frequently mention that it just works right out of the box, with no compatibility headaches, even in non-traditional devices like Synology NAS systems. The main draw seems to be its straightforward installation and immediate performance boost for systems that were previously memory-constrained. There are recurring comments about the ease of installation and the system recognizing the new RAM without any fuss.
“I just needed another 8GB for my laptop, and this Samsung stick popped right in and worked, no drama. My old laptop feels way snappier now, totally worth it.”
Common Praise
- System recognized the memory immediately after installation, no BIOS changes needed.
- Laptop or mini PC started faster and felt more responsive after the upgrade.
- Perfectly matched an existing Samsung 2666MHz module for dual-channel mode.
- Worked flawlessly in a Synology NAS, expanding its capabilities.
- No issues with blue screens or instability after installation.
Common Complaints
- Some confusion about finding an exact match for the part number for dual-channel setups.
- Not suitable for desktop PCs despite some misleading product information.
- The CL19 latency isn't the fastest available, but it's expected for this type of module.
Ownership Tips
- After a few weeks, the system's overall responsiveness is noticeably better, especially with multiple browser tabs open.
- No unexpected crashes or memory-related errors, indicating stable operation.
- The module runs cool, even under sustained load, which is good for laptop longevity.
- Boot times have slightly improved since the memory upgrade.
Frequently Asked Questions
Is this memory compatible with my desktop PC?
No, this is a 260-pin SO-DIMM module, which is designed for laptops and small form factor computers, not standard desktop PCs that use 288-pin DIMM modules.
Can I use two of these for dual-channel memory?
Yes, if your system supports dual-channel memory and has two SO-DIMM slots, you can install two identical modules for dual-channel operation. Users often seek out a second identical stick for this purpose.
What does '2666MHz' mean for performance?
2666MHz refers to the memory's operating frequency, indicating how many cycles it can complete per second. It's a common speed for DDR4 SO-DIMM, offering a balanced performance for everyday tasks and many applications.
What is the 'CL19' in the specifications?
CL19 refers to the CAS Latency, which is the delay in clock cycles between when the memory controller requests data and when the data is available. A lower CL number means faster response times, so CL19 is a standard but not particularly fast latency.
Will this work in my Synology NAS?
Some users have reported successful installation and operation of this specific module in Synology NAS devices, indicating good compatibility for those systems.
Is this memory ECC or Non-ECC?
This module is Non-ECC (Error-Correcting Code) memory, meaning it does not have the ability to detect and correct memory errors. This is typical for consumer-grade laptops and small form factor PCs.
Buying Guide
When you're looking at memory for your laptop or small PC, you need to get the right type and size. This isn't like buying a hard drive where almost anything fits. You need to check your system's existing memory or its specifications to ensure you're getting a compatible module. Getting the wrong type means it just won't fit, and the wrong speed or voltage might cause instability or not work at all.
DDR4
2666 MHz
260-Pin SO-DIMM
Alternatives
If you need more performance, look for DDR4 SO-DIMM modules with higher frequencies like 3200MHz or 3600MHz, and lower CAS Latency numbers such as CL16 or CL17.
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