GPU VS CPU- When to use GPU?

I was working on the blender, a software used for making the animations. While rendering my image into the real model I found that my CPU isn’t fast enough to maximize my work in the minimum time. I have to wait for minutes to hours in order to render my image. It was the time when I realized the major difference between CPU and GPU. That being said, it isn’t always the case that you should go for GPU and not for CPU. From personal experience I would try to guide you in the best way on how to choose between them; when and why. Bear with me!

Difference between CPU AND GPU:

The main difference between them is that the CPU (Central Processing Unit) is designed to handle a wide range of tasks quickly, but is limited in the concurrency of the tasks that are being run. GPU (Graphics processing unit) is designed to quickly rendered high-resolution images and videos concurrently. They’re both silicon-based microprocessors mounted to a PCB with heat sinks attached to them but when you look at their micro-architecture they have some fundamental differences that make them suitable for different roles inside your PC. Too many technicalities I guess, let’s move to some simpler explanation.

Gaming:

Imagine you have core I7 latest version but you don’t have any external graphic card attached to it and your friend has an old core i3 version but he has attached a good graphic card now if you both play GTA 5 simultaneously on both computers, You would see that game will be showing good performance on your friend’s PC and after seeing that you will be like, What’s going on? I have the latest version? Hold on you will get all answers.

Dedicated vs integrated GPUs:

Actually, the CPU is a general-purpose processor hence it does all the general work like if you’re listening to music, browsing something or any other general thing on PC all of this is handled by CPU but when it comes to the GPU, it is the special Purpose Processor which used only for handling the graphics by using parallel computing. There are two types of GPUs, INTEGRATED which are the part of the processor for handling the graphics like intel HD graphics, intel iris graphics, and iris pro graphics and some are dedicated like in laptops if you’ve added GTX 1080 AND others.

WHY WE NEED THEM?

Now you might be thinking that what is special in the graphics that we have to use the external processor for it then the answer is that graphics can use parallel computing. For example consider that you are playing IGI 5 and you’re standing in front of a building the there are buildings, lights people, guns, and many things. But before you see these things on the monitor, the computer has to calculate everything on where should everything be placed and where should you see them. Here we can use parallel computing i.e everything is independent hence each part of GPU can be used for different purposes.

These are the reasons why GPU is in demand these days but if you aren’t a pro-gamer or animated artist then yours CPU will handle other tasks.