
Samsung 4GB DDR4 PC4-21300, 2666MHZ, 260 PIN SODIMM, 1.2V, CL 19 Laptop ram Memory Module
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AI Verdict
This 4GB DDR4 2666MHz CL19 SODIMM is a basic memory module for laptops or compatible NAS devices needing a small capacity upgrade.
This 4GB DDR4 2666MHz SODIMM is a specific upgrade for systems that can only handle or only need a small memory increase. Its 1.2V operation is efficient, but the 4GB capacity limits its utility to basic computing tasks or as a supplemental stick in a dual-channel setup.
If you need more headroom for multitasking or demanding applications, look for a single 8GB or 16GB DDR4 SODIMM with a similar or higher speed and lower CAS Latency.
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Pros
- Operates at 1.2V, contributing to lower power consumption and potentially extending laptop battery life.
- Features a 2666MHz speed, which can enhance data transfer rates for programs relying on memory bandwidth.
- Many users report it working as expected for laptop and Synology NAS upgrades when installed correctly.
- Comes with a limited lifetime warranty.
Cons
- 4GB capacity is insufficient for modern demanding tasks like video editing or intensive gaming.
- Installation can be finicky; some users experienced non-recognition until re-seating the module multiple times.
- Synology NAS devices, a common upgrade target for this module, are reported to be particular about RAM compatibility, even with matching specs.
- The CL19 CAS Latency is on the higher side for 2666MHz DDR4, meaning slightly longer delays in data access.
Dimension Scores
The 2666MHz speed is standard for budget DDR4 SODIMMs, but the CL19 latency is average, not offering a performance edge.
It's a standard 260-pin DDR4 SODIMM, compatible with many laptops and some NAS devices, but specific system compatibility and installation can be finicky.
This is a standard JEDEC module with no advertised overclocking features or XMP profiles, and SODIMMs are rarely designed for overclocking.
Samsung memory generally has a reputation for reliability, and user feedback indicates it works consistently once installed correctly.
Best For
- Laptops with 4GB or less RAM needing a small performance boost for web browsing and document editing.
- Synology DS220+ or DS920+ NAS models for a modest RAM expansion, assuming careful installation.
- Budget laptop users looking for an affordable memory upgrade to improve multitasking for everyday applications.
Not Recommended For
- Power users requiring high performance for heavy multitasking or intensive applications.
- Gaming enthusiasts expecting to run modern titles with 4GB of RAM.
- Workstations performing 3D rendering or complex video editing.
Watch Out For
- Some users reported the module not being recognized initially, often resolved by re-seating it firmly in the slot.
- Compatibility with Synology NAS devices can be inconsistent; one user noted that 'previously compatible RAM will randomly refuse to work on another unit of the same model'.
- The 4GB capacity is quickly overwhelmed by resource-intensive applications, leading to performance bottlenecks.
Full Specifications
| RAM | 4 GB DDR4 |
| ASIN | B07HJB2KSR |
| Brand | Samsung |
| Color | Multicolor |
| Series | M471 |
| Voltage | 1.2 Volts |
| Item Weight | 0.81 ounces |
| Manufacturer | Samsung Electronics Co. Ltd |
| Memory Speed | 2666 MHz |
| Item model number | M471A5244CB0-CTD |
| Compatible Devices | Laptop |
| Product Dimensions | 29 x 29 x 29 inches |
| Computer Memory Size | 4 GB |
| Computer Memory Type | DDR4 SDRAM |
| RAM Memory Technology | DDR4 |
| Item Dimensions LxWxH | 29 x 29 x 29 inches |
| Is Discontinued By Manufacturer | No |
What Buyers Say
It's interesting how many users bought this 4GB stick specifically for Synology NAS upgrades, not just laptops, and often had to re-seat it multiple times before it registered. While many reported it working without issues after a successful install, the initial setup can be a headache, suggesting that some systems are just particular about how RAM is seated. The 4.7/5 rating from over 2,200 reviews suggests that for most, it eventually does the job it's intended for, especially for basic performance boosts.
“Dude, I swear this thing didn't work at first, my laptop just kept beeping, but after I pushed it in like three more times, it finally clicked and now my old machine actually opens more than two tabs without dying. Worth the frustration.”
Common Praise
- Works immediately after installation in compatible laptops.
- Successfully upgraded Synology DS220+ and DS920+ models.
- Improved system responsiveness for everyday tasks.
- Recognized by the system without compatibility warnings in many cases.
Common Complaints
- Memory module not detected until re-seated multiple times.
- Some Synology NAS models are extremely sensitive to RAM, even with matching specs.
- 4GB capacity is quickly maxed out by modern applications.
Ownership Tips
- The physical installation can be more challenging than expected, requiring firm pressure to ensure proper seating.
- Even if specs match, some systems, particularly Synology NAS devices, can be finicky about recognizing the module.
- For older laptops, a 4GB upgrade can make a noticeable difference in basic multitasking, but it's not a magic bullet for heavy use.
Frequently Asked Questions
What is the speed of this RAM module?
The Samsung 4GB DDR4 RAM module operates at a speed of 2666MHz. This speed helps with data transfer rates.
What does CL19 mean?
CL19 refers to the CAS (Column Address Strobe) Latency, which measures the delay between the memory controller requesting data and the RAM providing it.
Is this RAM compatible with desktop computers?
No, this is a 260-pin SODIMM module, specifically designed for laptops and some mini-PCs or NAS devices, not standard desktop motherboards that use 288-pin DIMMs.
Does this product come with a warranty?
Yes, the product is stated to come with a limited lifetime warranty.
Can I use this to upgrade my Synology NAS?
Many users have successfully used this module for Synology NAS upgrades, specifically models like the DS220+ and DS920+, but proper seating and checking your NAS's specific compatibility are crucial.
Buying Guide
When you're looking at RAM, you need to match a few key things to your laptop or device. Don't just buy any stick; check your system's current RAM type and speed. If you mix speeds, all your RAM will run at the slowest speed. Also, make sure you have an available slot and that your system supports the capacity you're adding.
DDR4
2666MHz
SODIMM
1.2V
Alternatives
If you need more than 4GB or want better performance, look for DDR4 SODIMM modules with higher capacities like 8GB or 16GB, and consider options with lower CAS Latency numbers for quicker data access.



