The 5 most WordPress important requirements for servers

Jan Hornung Last updated on 23.01.2020
4 Min.

More server power costs - but is a good investment. We show what needs to be considered to create optimal WordPress conditions.

There are numerous instructions for the optimization of WordPress . However, when it comes to the question of the best hardware requirements, one quickly comes up against limits. Because it depends on what purpose yours site should serve: Some require a lot of RAM, others an extremely fast CPU.

Basically, the question of Page loading speed so there's also a hardware issue. And a question of money. Because when it comes to hosting and hardware, the following applies: more power costs, but is also a sensible investment. Processing power and hostingPlan determine the basic WordPress requirements of your server. If these requirements are good, they can have a positive influence on the conversion rate, page interaction and your Google ranking [1].

Basically, the performance of your WordPress site computer is the same as that of your private computer: the more power the server has, the faster programs can be executed. Large shared hosting providers usually give you the following key figures:

  • Storage space and disk type (usually also of the mail and database storage)
  • Working memory
  • Server Location

However, CPU power is often neglected, which is one of the most important WordPress requirements.

WordPress Hardware requirement 1: CPU - the more cores, the better

The processor chip is the heart of the server. It basically determines how many processes can be processed at what speed. Nowadays it is not so much the type and sheer power of the CPU that is decisive - many host use modern and therefore very powerful hardware - but rather the number of cores.

The number of cores fundamentally describes the multitasking capability of a computer. Roughly speaking, a server with two cores can handle twice as many processes in one minute as a CPU with one core. This means that a server with two cores is much better suited for a server WordPress site with many concurrent users than a server with one core.

With regard to the choice of hardware, the question of the average and maximum number of simultaneous users ultimately determines what server power you need.

WordPress Hardware Requirement 2: Hard disk - SSDs up to 20x faster than HDDs

The hard disk is also an important WordPress requirement, but refers to a different process. While the processor determines how many calculations can be performed and how fast, the hard disk determines how fast the data for the calculation of these processes can be loaded to the CPU.

For more performance, the type of record is the most important factor. A distinction is made between the cheaper and slower hard disk drives (HDD) and the faster and more expensive solid state drives (SSD).

The high speed of the SSDs results from their design: HDDs have mechanical components that need to be moved. SSDs, on the other hand, are comparable to USB sticks: they contain no moving parts that need to be set in motion and moved.

SSDs are therefore also less susceptible to shocks and do not break so quickly. They are also much more ecological. If you want an uncompromisingly fast server, you should definitely choose an SSD.

Some providers store the database on an SSD hard disk, but store all remaining data on HDDs. This solution is a compromise between economic efficiency and performance and overall much faster than an offer where all data is stored on an HDD.

However, you have the best WordPress conditions when all data is stored on SSDs.

WordPress Hardware Requirement 3: Memory - the more, the better

RAM, or main memory, is considered by many to be the critical component of server performance. The main memory is located between the hard disk and the CPU. It prepares data from the server memory for processing in the processor. Because RAM can be accessed much faster than the hard disk. This means: the larger the working memory, the more computing processes can be stored "ready to work" for the CPU. Thus the entire data processing becomes faster.

WordPress Hardware Requirement 4: PHP Memory Limit

Besides the mere size of the working memory, a second value WordPress is decisive: the so-called PHP memory limit. This value describes the amount of memory reserved for the execution of PHP-based processes. Since the plugins PHP must be read for each step of the themes calculation, the PHP memory limit determines the speed of the most important functions.

But which RAM limit offers optimal WordPress conditions? Here, as so often: it depends.

Most installations WordPress run loudly already good with 64 MB. The standard for most hosts is between 100MB and 128MB. More powerful tariffs also offer 256MB or more.

Important: not only the PHP memory limit is important, but also the remaining RAM (the PHP limit is different from the normal RAM). If there is not enough memory left, calculation processes may be aborted.

WordPress Hardware Requirement 5: The server location - the closer, the better

The server location also has an influence on the loading speed. It is easy to imagine that the distance between user and server has an influence on the speed of page delivery: If a server in the USA has to be addressed for each request, this simply takes longer than if the server is located in Europe.

Even if the server location is certainly not the most important WordPress requirement, it can have a decisive influence on page performance.

Conclusion: Hardware is important, but only half the battle

The following applies to server performance: The more you pay, the more performance you get. Therefore, the question of which server requirements you really need for WordPress is crucial.

This question arises regardless of whether you site already run yours or WordPress completely new. Is yours WordPress instance is already online, it makes sense to first optimize the pages. Because this is free of charge (even if it is time-consuming). Only then should you think about additional performance investments.

Without choosing the right hosting tariff, however, the performance of your server can quickly fizzle out. Because if you have to share hardware with dozens or hundreds of other customers, you offer WordPress -Prerequisiteswhich are rather unfavorable. At next part of this series we therefore go into the most important performance factors of hosting.

But before that we would of course like to know what experience you have had with hardware so far. Which servers have proven to be particularly fast and what can you recommend to other WordPress users, for example regarding the PHP limit?

We look forward to hearing your opinion.



RAIDBOXER of the first hour and Head of Support. At Bar- and WordCamps he likes to talk about PageSpeed and website performance. The best way to bribe him is with an espresso - or Bavarian pretzel.

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