We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Is a Write Buffer?

By Alex Newth
Updated May 16, 2024
Our promise to you
EasyTechJunkie is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At EasyTechJunkie, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

In computer architecture, there are pieces of memory known as buffers. These buffers are small and hold information that must be able to be quickly accessed. A write buffer, which is held in the central processing unit (CPU) cache, holds information that must be capable of being written from the buffer to the random access memory (RAM) area of the computer. Most data from the cache are read and not written, so the write buffer is tiny compared to the read section of the cache. The write buffer can only handle one write request at a time, so only one piece of datum is released when a write request is received.

In memory architecture, regardless of whether the memory is from the CPU or RAM, there is a section called a cache. This represents a very small piece of the whole memory, and it stores previously read data so they can be recovered later. By storing the information, the computer will be able to recall it much quicker and easier when the user accesses it again.

A write buffer, which is exclusively stored in the CPU cache, stores information for writing. The difference between a read and write request is how the information is handled. In a read request, the information is recovered as is, without any changes or computations. A write request is more complicated, because the information has to be changed or computed before it can be used.

The majority of requests are read requests, such as recalling a static website or opening a previously saved document that has not changed. The write buffer helps to organize the entire buffer. Instead of having all the read and write requests in one place, which can dramatically reduce cache speed, the write information is only stored in one section so this section can work exclusively on write requests. The rest of the cache is then left to work on the predominant read requests.

In the write buffer, requests can only be handled one at a time. Instead of the read section of the cache, which handles many requests at once, the write section can only release information for one request. This is primarily because write requests are more difficult to fill, so the cache has to concentrate on the one task.

While the buffer can only fill one write request at a time, it still moves quickly. Write requests only need a small chunk of information to work, and the data are recalled within milliseconds. Even though they are slower than read requests, the write requests are still filled with just a short-time delay.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.

EasyTechJunkie, in your inbox

Our latest articles, guides, and more, delivered daily.