brands

attributes.Features

attributes.Desktop002fLaptop

attributes.Memory_Size

attributes.MemorySocketType

attributes.ProductType

attributes.Capacity

attributes.IndustrialGrade

attributes.Speed

attributes.Memory_Class

attributes.Memory_Socket

attributes.Module_Type

attributes.Pins

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Lexar 16 GB DDR4 Desktop RAM 3200 MHz, DIMM, 1.2V

Lexar 8 GB DDR4 Desktop RAM, DIMM, 1.2V

Lexar 16 GB DDR4 Laptop RAM 3200 MHz, DIMM, 1.2V

Lexar 16 GB DDR4 Laptop RAM 2666 MHz, DIMM, 1.2V

Lexar 16 GB DDR4 Desktop RAM 2666 MHz, UDIMM, 1.2V

Lexar 32 GB DDR4 Desktop RAM 3200 MHz, DIMM, 1.2V

Lexar 32 GB DDR4 Laptop RAM 3200 MHz, DIMM, 1.2V

Lexar 8 GB DDR4 Laptop RAM, DIMM, 1.2V


Random access memory (RAM) serves as the primary volatile storage medium within a computing architecture, functioning as a high-speed data buffer between the central processing unit (CPU) and persistent storage drives. Unlike non-volatile storage, such as SSDs or HDDs, RAM provides near-instantaneous read/write cycles, allowing the processor to cache active instruction sets and operand data for immediate execution.

This low-latency performance is critical for maintaining system throughput and facilitating seamless multitasking. As the capacity and clock frequency of the installed memory modules increase, the system’s ability to handle complex computational workloads and memory-intensive applications improves, directly influencing overall operational efficiency.

RS Hong Kong provides an extensive portfolio of industrial-grade and enterprise-level RAM modules, ranging from standard desktop DIMM and SO-DIMM form factors to specialised high-bandwidth solutions designed for rigorous technical environments.

## **Different Types of RAM**

The selection of RAM is governed by several performance metrics, including the total memory capacity, module configuration, and effective clock speed. Modern industrial systems demand varying densities to manage escalating data throughput, with capacities often ranging from 4GB for basic embedded tasks to 64GB and 128GB or higher for server-grade applications. Selecting the appropriate architecture is essential for ensuring hardware compatibility and optimising the data transfer rates between the memory controller and the modules.

### **DDR3 RAM**

Double Data Rate 3 (DDR3) synchronous dynamic random-access memory (SDRAM) was a long-standing industry standard, characterised by its 1.5V operating voltage and 8n-prefetch architecture. While largely superseded in high-performance computing, DDR3 remains vital for maintaining legacy industrial controllers, older server blades, and embedded systems where power efficiency and high-speed data transfer are balanced with hardware longevity.

### **DDR4 RAM**

DDR4 RAM represents a significant advancement in [memory technology](https://hken.rs-online.com/web/content/discovery/ideas-and-advice/different-types-of-memory-chips-explained-ram-rom-and-more), offering increased module density and reduced power consumption, typically operating at 1.2V. By utilising a higher bank count and improved signal integrity, DDR4 achieves significantly higher transfer rates than its predecessor. It is the current benchmark for modern business PCs and mid-range industrial workstations, providing the necessary bandwidth for complex processing tasks.

### **DDR5 RAM**

DDR5 is the latest evolution in SDRAM, engineered to meet the extreme bandwidth requirements of next-generation processors. It features on-die Error Correction Code (ECC) and dual 32-bit subchannels per module, which drastically improves efficiency and data integrity. With base speeds starting far above the maximums of DDR4, DDR5 is essential for data centres and high-end engineering platforms requiring massive parallel processing capabilities.

### **ECC vs Non-ECC RAM**

Error Correction Code (ECC) RAM is specialised memory capable of detecting and correcting single-bit memory errors, which prevents system crashes and data corruption. This is a critical requirement for servers and mission-critical industrial systems where uptime is paramount. Conversely, Non-ECC RAM is standard in most consumer and general office workstations, where the rare occurrence of a soft error does not justify the additional cost and slight latency overhead of parity checking.

## **Applications of RAM**

The deployment of RAM varies significantly across different sectors, with each application demanding a specific balance of capacity, speed, and reliability to ensure peak system performance.

### **Office Workstations & Business PCs**

In standard corporate environments, RAM facilitates the concurrent operation of productivity suites, web browsers, and communication software. For these applications, DDR4 or DDR5 modules with capacities of 8GB to 16GB are typically sufficient to prevent page-filing to the disk, ensuring a responsive user interface and efficient workflow transitions.

### **Servers & Virtualisation Platforms**

Server environments require high-density ECC memory to support multiple virtual machines (VMs) and high-traffic databases. In these settings, RAM must handle massive concurrent data requests while maintaining 100% data integrity. High-capacity RDIMMs (Registered DIMMs) are frequently employed here to reduce electrical load on the memory controller, allowing for stable operation even when the system is fully populated with high-capacity modules.

### **Engineering & CAD Workstations**

Engineering tasks, such as 3D modelling, Finite Element Analysis (FEA), and Computer-Aided Design (CAD), are highly memory-intensive. These applications require large frames of data to be held in active memory for real-time rendering and complex geometrical calculations. Professionals in these fields typically utilise 32GB to 128GB of high-speed RAM to ensure that large-scale assemblies can be manipulated without latency.

### **Embedded Systems & Industrial Computing**

In manufacturing and [automation](https://hken.rs-online.com/web/content/discovery/ideas-and-advice/future-automation-guide), embedded computers often operate in harsh environments where reliability is more critical than raw speed. These systems use RAM to process real-time sensor data and execute PLC (Programmable Logic Controller) logic. Small Form Factor (SFF) modules, such as SO-DIMMs, are frequently used in these compact industrial PCs to provide robust performance within space-constrained enclosures.

## **The Leading Supplier and Distributor of RAM in Hong Kong**

RS Hong Kong is your dependable partner for high-performance computer random access memory (RAM) solutions. We maintain an extensive inventory from premier manufacturers such as [Transcend](https://hken.rs-online.com/web/b/transcend/), [Kingston](https://hken.rs-online.com/web/b/kingston/), and [Crucial](https://hken.rs-online.com/web/b/crucial/), ensuring that our clients have access to the most reliable memory modules on the market. Our portfolio includes a wide array of capacities and architecture types at competitive price points, allowing you to source the exact industrial or enterprise RAM required for your specific hardware configuration.

Beyond memory modules, we supply a wide range of critical computing infrastructure, including [industrial PCs](https://hken.rs-online.com/web/c/automation-control-gear/plcs-hmis-industrial-computing/industrial-computers/) and uninterruptible power supplies ([UPS power supplies](https://hken.rs-online.com/web/c/power-supplies-transformers/power-supplies/uninterruptible-power-supplies/)), to ensure system resilience and performance. Purchase your DDR4 DIMMs, high-speed DDR5 modules, SO-DIMM laptop memory, and other essential hardware online today. For further information regarding our procurement process, logistical support, and shipping rates, please consult our [dedicated delivery information page](https://hken.rs-online.com/web/content/support/all-articles/delivery).



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Crucial 8 GB DDR4 Laptop RAM 2400 MHz 1.2 V

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Integral Memory 8 GB DDR4 Laptop RAM 2400 MHz 1.2 V

Transcend 16 GB DDR4 RAM 2666 Mbit/s 1.2 V

Lexar 8 GB DDR4 Laptop RAM 2666 MHz 1.2 V

Lexar RAM

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