A Look at Cache Memory

Cache memory is a high-performance, temporary server memory that offers faster and more efficient access to data than server RAM (random access memory). Cache memory is a critical part of every server, and therefore important to understand in order to ensure your system is well supported. In this blog, we will discuss cache memory and answer four common questions surrounding it: what is cache memory/what does it do, how does cache memory work, what are the types of cache memory, and how can you upgrade cache memory?
 
What is cache memory and what does it do?
 
Cache memory is essentially a smaller and faster version of RAM that contributes to the overall performance of your central processing unit (CPU). It is very small, in close proximity to the CPU, and is able to keep up with the high speeds of the CPU. Cache memory improves the efficiency of your CPU and prevents bottlenecks in your system by keeping the CPU busy to avoid wasted computation.
 
How does cache memory work?
 
Cache memory temporarily stores information, data, and programs that are frequently used by the CPU. When data is needed, the CPU automatically looks to the cache memory for faster data access. It turns to cache memory first because server RAM is both slower and further away from the CPU. When the CPU locates data in the cache memory, it is known as a cache hit. Cache hits enable the processor to quickly access data, improving the overall efficiency of the system. Because cache memory is smaller than RAM, the data is only stored temporarily and may not be there when the processor needs it. When the cache does not have the processor’s required data, it is known as a cache miss. In these cases, the CPU moves to the hard drive to access RAM.
 
What are the types of cache memory?
 
There are three main types of cache memory. They are known as levels and all have slightly different functions. Level 1 (L1) is the fastest type of cache memory as it is the smallest and closest to the processor. Level 2 (L2) has a higher capacity but a slower speed. L2 is located on the processor chip. Finally, Level 3 (L3) has the largest capacity and is located on the computer that uses the L2 cache. Because cache memory is so small and large quantities of memory are often needed, different levels of cache are necessary to ensure that the cache memory can handle the demand of data processing.
 
How can you upgrade cache memory?
 
It is not possible to upgrade your cache memory without first upgrading your CPU. There are two main brands of CPUs: AMD and Intel Corporation. Both offer different benefits and should not be considered interchangeable. The choice ultimately comes down to preference, similar to the choice between an Apple or Android smartphone. That said, AMD chips are usually cheaper, though Intel CPUs tend to offer more impressive graphics performance.
 
Whatever type of memory products you are in need of, be sure you are getting them from a trusted source. At ASAP IT Technology, owned and operated by ASAP Semiconductor, we can help you find all types of parts for the aerospace, defense, civil aviation, industrial, electronics, and IT hardware markets. We have cache memory product part numbers such as NVCPEMWR001G110, AA0004001, 372538B21, and more, from top manufacturers including Nortel Networks, HP, and others. We’re always available and ready to help you find all the parts and equipment you need, 24/7-365. For a quick and competitive quote, email us at sales@asap-ittechnology.com or call us at 1-714-705-4780.

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January 24, 2019

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