When choosing the best server CPU, several factors must be considered to ensure optimal performance. In this post, we will detail important factors that you should consider when selecting a CPU for your dedicated server in 2024.

Main Takeaways

  • A CPU is the main chip in a computer. It processes all the instructions to run applications.
  • The CPU you will want to choose for your server will depend on your use case.
  • For use cases that are enterprise, you will want a server grade CPU with support for ECC RAM.

    • What is a CPU? What are Server Cores?

    A CPU (Central Processing Unit) is the primary component of a computer that performs most of the processing inside a computer. In the context of server hosting, a CPU can be broken down into several smaller pieces that make up the larger processor:

  • Cores: A CPU core is the central processing unit that executes instructions and performs computing tasks. Some applications work on only one core of the CPU. In 2024, most optimized applications are able to work on multiple cores of the CPU at one time.
  • Clock Speed: This number measures the number of cycles (processing power) that your CPU can execute every second. Clock speed is measured using GHz. During each cycle, transistors inside of the CPU open and close to perform calculations.
  • Threads: Imagine a thread in a CPU like a worker in a factory. The CPU is the factory, and each thread is a worker that does a specific job. In a CPU, multiple threads can work on different tasks at the same time. This is similar to how multiple workers can perform different tasks simultaneously. This helps the CPU handle lots of tasks quickly, making your computer run smoothly.
  • Cache: Cache is the memory inside of a CPU that allows it to store instructions that it needs to return to frequently. By keeping this information in the cache, the CPU is able to come back to the information, which speeds up performance.

    • Generally speaking, most CPUs have 2 threads per core. Different brands of CPU have different ways of handling core count, clock speed, thread count, and cache.

    Cores vs. Clock Speed: Which is Better For a CPU?

    When deciding on which CPU to choose for your dedicated server or VPS, what should you prioritize first: cores, or clock speed? Well, the answer is a little complicated.

    When looking for a server CPU, factoring in performance is a must. Some people choose to determine performance by multiplying the number of cores by the number of threads. This number will typically give a good starting base to determine how many instructions a CPU can handle at one time. This tends to give a good baseline to compare one processor to another for most people.

    Single vs. Multicore Server Processors

    Unfortunately, determining performance isn't as simple as calculating the number of instructions your CPU can handle. The most important thing you can do is to decide whether or not your use case is single or multicore.

    When deciding whether or not to choose a certain CPU, answering this question will point you in a great direction. If your use case involves an application that is single cored, focus solely on the clock speed of your CPU to get the most calculations in a given second. If your use case involves multitasking (serving video content, database management, game server hosting, etc.) then go for a server that has a high core count.

    Server vs. Desktop Processors: Which One Should I Choose?

    The server processors vs. desktop processors debate is one that has been around for decades in the server hosting industry. Both types of CPUs have their advantages and disadvantages.

    Choosing a Server CPU: When Should You?

    Generally speaking, server processors are best for a wide range of use cases where:

  • You need lots of cores with lots of threads to handle multitasking.
  • You want faster total multicore performance in comparison to a desktop processor.
  • You want ECC memory support. ECC (error correcting code) RAM can detect and correct issues with data, improving reliability. If this is a requirement for you, we recommend purchasing a Xeon dedicated server.

    • Generally speaking, most server grade CPUs are Intel processors. At most providers, you can usually rent server grade CPU dedicated servers at a great entry level price.

    Atomic Networks currently offers the following Intel Xeon Processor based CPUs for rental as dedicated servers:

  • Dual Xeon E5-2695v4 Dedicated Server
  • Dual Xeon E5-2680v4 Dedicated Server
  • Dual Xeon E5-2680v2 Dedicated Server
  • Dual Xeon E5-2690v4 Dedicated Server

    • When to Buy a Desktop CPU Dedicated Server

    Desktop processors also have their use cases in the dedicated server hosting space, usually within the context of gaming. The reason for this is that most games run on these processors better than their server processor counterparts.

    Desktop processors offer a great solution for situations where:

  • You know the application you are running is able to perform better on a desktop CPU.
  • You need a gaming related dedicated server solution.
  • You do not require ECC RAM support for your use case.

    • Atomic Networks currently offers the following desktop based CPUs for rental as dedicated servers:

  • Intel Core i9-11900k Dedicated Server
  • Intel Core i9-12900k Dedicated Server
  • AMD Ryzen 7950X3D Dedicated Server
  • AMD Ryzen 7950X Dedicated Server

    • Conclusion

    When selecting the ideal CPU for your needs, several factors need consideration. Initially, determine the primary functions of your server. For heavy-duty tasks such as video editing or 3D rendering, opt for a CPU with high clock speeds and multiple cores. Conversely, for less demanding activities like web hosting or managing emails, a less robust CPU will suffice.

    If you are still having trouble deciding what CPU you need for your business, don't hesitate to contact us. Just open a ticket, we have the experience to help you find a solution to your hardware problem at a great price.