Cache on a STick

Definition of Cache on a STick

Cache on a Stick (COAST) is a now-obsolete technology that was used to improve the performance of computer systems, particularly those with Intel Pentium processors. It involved adding an external cache memory module (the “stick”) to the motherboard, thus increasing cache size and allowing for faster data access. The technology was eventually replaced by integrated Level 2 (L2) cache, where the cache was built directly into processors for improved efficiency and performance.


The phonetics of the keyword “Cache on a Stick” is:/ˈkæʃ ɒn ə stɪk/

Key Takeaways

  1. Cache on a Stick (COAST) is a storage technology that extends the cache memory of a processor by integrating it onto a separate memory module, improving system performance and reducing latency.
  2. COAST modules are typically installed onto the motherboard and connect to the processor via dedicated pins or slots, allowing for easy upgrades and enhancements to the system’s cache memory capacity.
  3. Though COAST was popular in the mid to late 1990s for improving the performance of systems using Intel Pentium processors, it has largely been replaced by advances in integrated and on-die cache designs in modern processors.

Importance of Cache on a STick

Cache on a Stick refers to a specialized type of memory storage technology, typically used to accelerate computer performance by providing rapid access to frequently used data and applications.

It’s important because it significantly reduces the time it takes to fetch information, thereby improving the efficiency and speed of a computer’s data retrieval processes.

By storing a small, local copy of frequently accessed files on the Cache on a Stick (which is often integrated on a Solid State Drive or a separate flash memory), the computer can focus its resources on more complex tasks and ensure a smoother user experience.

This technology also helps in reducing the workload on the central processing unit (CPU) and main memory, which is vital for optimal system performance.


Cache on a Stick (COAST) is a technology module designed to enhance the performance of a computer by providing a small but high-speed memory that retains the most frequently accessed data. The primary purpose of incorporating COAST is to reduce the time taken to fetch data, thus increasing the efficiency of the system.

In essence, it acts as an intermediary between the central processing unit (CPU) and the main memory (RAM), enabling faster data retrieval, faster decision making, and better overall performance of the system. Utilized mostly in the early generations of personal computers, COAST modules have now become obsolete, as advancements in technology have paved the way for other mechanisms such as Level 2 (L2) and Level 3 (L3) cache memory, which are integrated directly within the microprocessor.

However, the concept of a cache memory remains crucial for the smooth functioning of contemporary computing systems. COAST’s primary legacy lies within its contribution to the development of cache memory for computers and the continuous drive to improve processing capabilities to meet the evolving technological requirements.

Examples of Cache on a STick

Cache on a Stick (COAST) is a technology that was primarily used in the mid-1990s for improving the cache memory performance of computers, particularly the Intel Pentium processor-based ones. Here are three real-world examples of COAST technology:

ASUS SP97-V Motherboard: This motherboard, launched in the 1990s, was based on the Intel Socket 7 platform and supported Intel Pentium CPUs. It was among the computers that utilized the COAST technology as a means to upgrade cache memory capabilities. The motherboard featured a COAST slot that allowed users to install a memory module to boost performance.

Intel Pentium Processors with COAST:In the early and mid-1990s, several Intel Pentium-based computer systems used COAST as an optional upgrade for cache memory. Users could insert a COAST module in the dedicated slot on their motherboard, which increased the system’s cache memory to improve the performance of various applications, including multimedia rendering and gaming.

Micronics M55HI-Plus Motherboard:Another example of COAST technology in action can be found in the Micronics M55HI-Plus motherboard, which supported Socket 7 processors. This motherboard featured a COAST slot, enabling users to add a COAST memory module to enhance the cache memory capabilities of the system. The addition of a cache module significantly improved the computer’s performance when running memory-intensive tasks.

Cache on a Stick FAQ

What is Cache on a Stick?

Cache on a Stick (COAS) is a portable caching solution that allows you to store, access, and manage cache data on a small portable device, such as a USB stick or an external storage device. This enables you to carry your cache data to different devices or share it with others.

How does Cache on a Stick work?

Cache on a Stick works by storing cache files on a portable storage device. The cache files can be easily transferred between devices or accessed from multiple devices at once. When you need to access the cache data, simply plug the storage device into an available USB port, and the cache files are immediately available for use.

What are the benefits of using Cache on a Stick?

Some benefits of using Cache on a Stick include improved performance, easier data management, and portability. By utilizing a portable cache solution, you can reduce the load on your device’s storage and improve the overall performance. Additionally, Cache on a Stick allows for easier data management, as you can simply move the cache files to a new device when necessary. Finally, the portability of Cache on a Stick makes it a convenient tool for users who need to access their cache data on multiple devices or share it with others.

How do I set up Cache on a Stick?

To set up Cache on a Stick, you will need a portable storage device, such as a USB stick or an external hard drive. First, format the storage device using a file system that is compatible with your devices. Next, create a folder on the storage device to store the cache files. Lastly, configure your devices or applications to use the newly created cache folder on the portable storage device.

Is Cache on a Stick secure?

Cache on a Stick can be secure as long as appropriate precautions are taken. It is essential to ensure that your cache data is encrypted and password-protected to prevent unauthorized access. Additionally, it is recommended to use a storage device with built-in security features, such as hardware encryption, to further enhance the security of your cache data.

Related Technology Terms

  • Non-Volatile Memory
  • Fast Access Time
  • Data Retention
  • Plug and Play
  • Cache Performance Enhancement

Sources for More Information

  • Techopedia –
  • Wikipedia –
  • PCMag –
  • Computer Hope –

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