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Finding the Right Server Memory: A Comparison of DDR4, DDR3, RDIMM, and LRDIMM

Server memory, also known as server RAM (random access memory), is an essential component of any server system. It is used to store data temporarily while it is being processed by the CPU (central processing unit). Choosing the right type of server memory is crucial for the performance and stability of a server. In this article, we will compare some of the different types of server memory modules available on the market and discuss their pros and cons.

One of the most popular types of server memory is DDR4 (double data rate 4). It is the fourth generation of DDR memory and offers improved performance and power efficiency compared to its predecessor, DDR3. DDR4 is the fastest and most widely used type of server memory, and it is compatible with most modern server systems.


Another type of server memory is DDR3 (double data rate 3). It is the third generation of DDR memory and has been around for a while. While it is slower than DDR4, it is still widely used in servers and is generally cheaper.


RDIMM (registered dual in-line memory module) is a type of memory module that is used in servers with multiple processors. It is called "registered" because it has a register between the memory module and the memory controller, which helps to improve performance and stability. RDIMM is generally more expensive than UDIMM (unbuffered dual in-line memory module), which is used in single-processor systems.


LRDIMM (load-reduced DIMM) is a newer type of memory module that is similar to RDIMM, but it has a reduced load on the memory controller. This allows for more memory modules to be used in a server, which can improve performance. However, LRDIMM is generally more expensive than RDIMM.


Here are some popular brands of server memory modules:

  • Kingston

  • Crucial

  • Corsair

  • G.Skill

  • ADATA

  • Micron

  • Samsung

  • Hynix

These brands offer a variety of different types of server memory, including DDR4, DDR3, RDIMM, and LRDIMM. It's important to note that while brand name is one factor to consider when purchasing server memory, it is also important to consider the specific specifications and compatibility with your server system. It is always a good idea to do some research and read reviews before making a decision.


In conclusion, there are several different types of server memory modules available on the market, and each has its own pros and cons. DDR4 is the fastest and most widely used type of server memory, but it can be more expensive than DDR3. RDIMM is suitable for servers with multiple processors, but it is generally more expensive than UDIMM. LRDIMM can improve performance by allowing for more memory modules to be used in a server, but it is generally the most expensive option.


If you are looking for any kind of memory modules, get in touch with us: info@server-parts.eu.

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