Difference Between Internal and External RAM

In the realm of Android devices, RAM (Random Access Memory) plays a pivotal role in determining the performance and multitasking capabilities of smartphones and tablets. Understanding the distinction between internal and external RAM is essential for optimizing device performance and managing system resources efficiently.


RAM serves as a temporary storage space for actively running applications and system processes. Android devices utilize both internal and external RAM to accommodate the diverse needs of users and ensure smooth operation of applications and services.

Internal RAM:

  1. Primary Storage: Internal RAM, also known as onboard RAM or system memory, refers to the built-in memory chips integrated directly into the device’s motherboard.
  2. Performance: Internal RAM is typically faster and more responsive compared to external storage options such as SD cards. It facilitates quick access to frequently used data and enables seamless multitasking.
  3. System Processes: Android’s operating system and core system processes reside in internal RAM, ensuring rapid execution and smooth operation of essential functions.
  4. App Execution: When you launch an application, its code and data are loaded into internal RAM for execution. The amount of available internal RAM directly impacts the device’s ability to run multiple apps simultaneously without slowdowns or crashes.

External RAM:

  1. Expandable Storage: External RAM, often referred to as additional or external memory, includes removable storage options such as microSD cards that can be inserted into the device.
  2. Supplemental Capacity: External RAM provides supplemental storage capacity for storing media files, documents, and app data. It allows users to expand their device’s storage beyond the built-in memory.
  3. Limitations: While external RAM can increase storage capacity, it is generally slower than internal RAM in terms of data transfer speeds and access times. Consequently, it may not be suitable for storing and executing resource-intensive applications or system processes.
  4. App Installation: Android devices may allow users to move certain apps or app data to external storage to free up internal space. However, performance may be affected due to the slower read/write speeds of external storage compared to internal memory.

Utilizing Both Internal and External RAM Efficiently:

  1. Optimizing App Management: Users can optimize device performance by managing their installed apps effectively. Storing frequently used apps and critical system processes in internal RAM ensures optimal performance, while utilizing external storage for media files and less frequently accessed data helps conserve internal space.
  2. Choosing Quality External Storage: When selecting external storage options such as microSD cards, opt for high-quality, high-speed cards with ample storage capacity. This ensures smoother data transfer and access times, minimizing performance bottlenecks.
  3. Regular Maintenance: Performing routine maintenance tasks such as clearing cache files, uninstalling unused apps, and periodically organizing data stored on external memory can help optimize overall device performance and storage efficiency.


In the Android ecosystem, internal and external RAM serve distinct yet complementary roles in facilitating efficient operation and storage management. Internal RAM enables swift execution of apps and system processes, while external RAM provides supplemental storage capacity for accommodating media files and app data. By understanding the differences between the two and implementing effective storage management strategies, users can optimize device performance and enhance their Android experience.

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