Guide To Buying Server Memory: The Basics

When it comes to running a server, having the right memory is critical for ensuring optimal performance and reliability. There are many different types of memory available, and it can be challenging to know which one is the best for your server. In this guide, we will explore the different types of server memory and help you determine which one is right for you.

Understanding Server Memory

Memory, also known as RAM (Random Access Memory), is a critical component in the functioning of a server. It is used to store data temporarily, allowing the server to access it quickly and efficiently. The more memory a server has, the more tasks it can perform simultaneously without slowing down.

Types of Server Memory

There are several different types of server memory, including DDR3, DDR4, and Load Reduced DIMMs (LRDIMMs).


DDR3 (Double Data Rate 3) is the third generation of DDR memory technology. It is the most commonly used type of server memory and is known for its high-speed data transfer rates. DDR3 is suitable for use in servers that require moderate memory capacity and performance. The Dell 317-5135 is a decent DDR3 server memory.

Key Features of DDR3 Server Memory

  • Increased Speed: DDR3 memory operates at speeds ranging from 800 MHz to 1600 MHz, which is significantly faster than DDR2 memory. The increased speed allows for faster data transfer, which translates to improved performance for the server.
  • Improved Efficiency: DDR3 memory uses a higher voltage than DDR2, which allows for improved efficiency and reduced power consumption. The improved efficiency results in lower heat generation, which is important for servers that operate 24/7.
  • Larger DIMM Capacities: DDR3 memory is available in larger DIMM capacities than DDR2, with sizes ranging from 1 GB to 16 GB. This allows for more memory to be installed in a server, which can improve its performance.
  • Enhanced Error Correction: DDR3 memory features enhanced error correction capabilities, which help to ensure the integrity of the data stored in memory. This is important for servers, where data loss can have serious consequences.

Benefits of DDR3 Server Memory

  • Improved Performance: The increased speed and efficiency of DDR3 memory results in improved performance for the server. This can result in faster processing times and reduced downtime.
  • Increased Reliability: The enhanced error correction capabilities of DDR3 memory helps to ensure the reliability of the data stored in memory. This is important for servers, where data loss can have serious consequences.
  • Lower Power Consumption: The improved efficiency of DDR3 memory results in lower power consumption, which can reduce energy costs for the server.
  • Larger Memory Capacity: The availability of DDR3 memory in larger DIMM capacities allows for more memory to be installed in a server, which can improve its performance.


DDR4 (Double Data Rate 4) is the latest generation of DDR memory technology. It offers faster data transfer rates and higher memory capacity than DDR3. DDR4 is ideal for use in high-performance servers and data centers where maximum memory capacity and speed are required. For example, the Innodisk M4R0-8GS1A5EM DDR4 memory delivers fast data transfer for high performance. 

Key Features of DDR4 Server Memory

  • Faster Data Transfer Speeds: DDR4 server memory offers faster data transfer speeds compared to its predecessor DDR3 memory, with speeds up to 3200 MHz. This results in improved performance, allowing for quicker access to data, faster load times, and reduced lag.
  • Increased Bandwidth: DDR4 memory also provides a higher bandwidth, allowing for more data to be processed simultaneously. This is particularly important for servers that support multiple users, as it enables the server to handle a higher volume of requests without slowing down.
  • Lower Power Consumption: DDR4 memory consumes less power compared to DDR3, which is important in reducing the energy costs associated with server operation. The lower power consumption also results in less heat generation, which can be a critical factor in server environments where temperature management is essential.
  • Improved Reliability: DDR4 memory is also more reliable compared to DDR3, with increased resistance to data corruption and errors. This is important in server environments where downtime can have a significant impact on business operations.

Benefits of Using DDR4 Server Memory

  • Improved Performance: DDR4 server memory provides improved performance compared to DDR3, with faster data transfer speeds, higher bandwidth, and reduced latency. This results in a more responsive server that can handle more demanding applications and services with ease.
  • Energy Efficient: The lower power consumption of DDR4 memory translates into reduced energy costs, which can have a significant impact on the operating costs of a server. This makes DDR4 memory a more cost-effective solution compared to DDR3.
  • Reliability and Stability: DDR4 server memory is more reliable and stable compared to DDR3, which can result in fewer crashes, reduced downtime, and improved overall server stability. This is particularly important in critical applications where downtime can result in significant financial losses.
  • Increased Scalability: DDR4 server memory is designed to be scalable, allowing for the addition of more memory as the needs of the server grow. This enables the server to accommodate the increasing demands of modern applications and services, while still providing reliable performance.

Load Reduced DIMMs (LRDIMMs)

Load Reduced DIMMs (LRDIMMs) is a type of server memory that is designed to handle high memory loads. They are commonly used in large data centers where multiple servers are run in parallel, and a high amount of memory is required. LRDIMMs offer higher memory capacity and performance compared to DDR3 and DDR4.

Factors to Consider When Choosing Server Memory

Whether you are choosing the Dell 317-5135 DDR3 or theInnodisk M4R0-8GS1A5EM DDR4, there are several important factors to consider, including:

  • Capacity: The amount of memory required depends on the server’s intended use and the number of applications that will be run simultaneously. A server with more memory will be able to handle a larger number of tasks without slowing down.
  • Performance: The type of server memory you choose will directly impact the performance of your server. DDR4 memory, for example, offers faster data transfer rates compared to DDR3 memory.
  • Cost: Server memory can be expensive, and it’s important to consider your budget when making a purchase. DDR3 memory is typically more affordable than DDR4 and LRDIMMs, but it may not be suitable for high-performance servers.


In conclusion, selecting the right server memory is critical for ensuring optimal performance and reliability. When choosing server memory, consider the capacity, performance, and cost of the different types of memory available. DDR3, DDR4, and LRDIMMs are the most commonly used types of server memory, each offering unique benefits and capabilities. So, which one will you buy the Dell 317-5135 or the Innodisk M4R0-8GS1A5EM?