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| Product Type | Memory Module |
|---|---|
| Memory Capacity | 4 GB |
| Memory Technology | DDR4 |
| Product Voltage | 1.2V |
| RAM Speed | 2666MHz |
| RAM Standard | DDR4-2666/PC4-21300 |
| Error Identifying | Non-ECC |
| Signal Type | Unbuffered |
| Column Access Strobe (CAS) | CL19 |
| Rank | Single Rank x16 |
| Quantity of Pins | 288-pin |
| RAM Genre | UDIMM |
Designed as a desktop UDIMM, this Samsung DDR4-2666 module suits mainstream gaming and content creation builds where non-ECC, unbuffered operation keeps latency low. Its single-rank x16 organization simplifies memory controller loading for better compatibility and signal integrity at 1.2 V, delivering a reliable 21.3 GB/s bandwidth with a CAS latency of 19.
1. DDR4 technology provides a significant bandwidth uplift over older DDR3, allowing mainstream desktop users to render complex documents and edit high-resolution photos without the memory becoming a bottleneck.
2. The 2666MHz clock speed translates to smooth multitasking and stable frame pacing in e-sports titles, preventing micro-stutters that disrupt competitive gameplay.
3. CL19 latency accelerates data delivery to the CPU, resulting in perceptibly snappier system response when launching creative suites or juggling dozens of browser tabs.
4. 1.2V operation reduces thermal output inside the case, enabling quieter air-cooled builds and giving overclockers a cooler starting point for fine-tuning performance.
5. Single Rank x16 construction presents a lighter electrical load to the processor’s integrated memory controller, maximizing compatibility with a broad range of consumer motherboards and simplifying a trouble-free upgrade.
As a memory product specialist, let me explain why the Samsung M378A5244CB0-CTD is a critical upgrade for your desktop PC. This is a standard 288-pin UDIMM, built specifically for high-performance desktops, not servers or laptops, and every specification here addresses real user frustrations.
In intense AAA gaming, the 2666MHz speed and CL19 latency work together to minimize stuttering and input lag. When you are tracking an opponent across a sprawling battle royale map, the memory's fast column access strobe ensures texture pop-in is virtually eliminated and frame times stay smooth. For video editors and 3D renderers, the single-rank x16 design improves signal integrity and compatibility, allowing your system to shuttle massive 4K assets from the CPU to your editing timeline without memory-related bottlenecks, even when running multiple applications simultaneously. The 1.2V ultra-low voltage means the module generates noticeably less heat during prolonged rendering sessions, preserving system stability when your workstation is under sustained load for hours. Because it is non-ECC and unbuffered, the electrical path is direct and free of the added latency that server memory imposes, translating to snappier application launches and more responsive multitasking every single day. This is the tangible difference between simply owning a fast computer and truly experiencing one.
As a desktop UDIMM with 1.2 V DDR4-2666 and single-rank x16 construction, this module suits mainstream consumer boards. Capacity planning for quad-slot systems follows.
Gaming Build
For gaming, dual-channel is critical. Install four identical 4 GB modules for a total of 16 GB, enabling smooth frame delivery and reducing stutter. Avoid limiting the build to 8 GB (2x4 GB), as modern titles easily exceed that, causing performance drops.
Content Creation
Content creation demands large memory pools. Fully populating the board yields 16 GB, which is only a starting point for 1080p video editing; 4K workflows and 3D renders quickly exhaust this capacity. Use this configuration for light projects and plan to upgrade to 32 GB or higher for intensive tasks.
General Productivity
For everyday multitasking, a dual-channel 8 GB kit (2x4 GB) balances cost and responsiveness. It handles office suites, video calls, and 20+ browser tabs comfortably. A single 4 GB module is acceptable only for basic thin-client duties—always prefer a matched pair.
Rigorously tested for compatibility: works with Intel/AMD desktops like Dell OptiPlex 7080, HP EliteDesk 800 G6, Lenovo ThinkCentre M70s.
Q: Can I mix this M378A5244CB0-CTD with other memory modules of different brands or speeds?
A: Mixing is possible, but all modules will default to the slowest speed and highest latency. For guaranteed stability, we recommend installing identical modules with the same part number, speed, and rank configuration.
Q: Is this memory compatible with my system? I have an Intel Z390 motherboard.
A: This DDR4-2666 UDIMM is compatible with any desktop motherboard supporting 288-pin DDR4, including Intel 300-series chipsets like Z390. Please verify your board supports Non-ECC, Unbuffered memory and check the memory QVL list.
Q: What is the recommended DIMM population order for optimal performance?
A: For dual-channel motherboards with four slots, populate the second and fourth slots from the CPU first (typically A2/B2). This configuration enables dual-channel mode and often provides the best signal integrity. Refer to your motherboard manual.
Q: Does this module support overclocking or XMP profiles?
A: This is a JEDEC-standard DDR4-2666 module without XMP. It operates at its rated 2666MHz speed with CL19 timings at 1.2V and does not support overclocking. Stability is ensured at these standard parameters.
Q: What warranty and typical failure rate can I expect?
A: This Samsung memory module comes with a 1-year warranty. It is manufactured to high-quality standards with a very low annualized failure rate (AFR) typically below 0.5%, ensuring reliable long-term operation.