🧠 CPU vs GPU: what are the differences ?

When looking at a computer’s specifications, the terms CPU and GPU have probably already appeared. These two components are essential to how a computer works, but they do not play exactly the same role.

So, what is the difference between a CPU and a GPU? Why do some computers have both? And which one is more important?

In this new IT Concept, the role of each one is explained in simple terms.

🧠 What is a CPU?

The CPU (Central Processing Unit), also called the processor, is considered the “brain” of the computer.

It executes the instructions required for the operating system and software to run.

In particular, it is responsible for:

• 💻 running Windows, Linux or macOS;
• 📂 executing software;
• 🧮 performing calculations;
• 🌐 handling many everyday tasks;
• 🎮 contributing to how video games run.

A CPU generally has a few very powerful cores capable of handling different and complex tasks.

💡 Key point: the CPU is particularly effective for carrying out varied tasks that require making decisions and processing complex instructions.

🎨 What is a GPU?

The GPU (Graphics Processing Unit), or graphics processor, is specialized in handling a large number of calculations in parallel.

Originally, it was mainly designed to display images, animations and video games.

Today, its use has expanded greatly.

A GPU can in particular be used to:

• 🎮 render game graphics;
• 🎬 speed up certain video processing tasks;
• 🖥️ generate 3D images;
• 🤖 perform certain calculations related to artificial intelligence;
• 🧮 very quickly carry out a huge number of similar calculations in parallel.

💡 Key point: the GPU is particularly efficient when it has to perform a large number of similar calculations at the same time.

🎮 Why are both used together?