SSE3 is like a special helper for your computer that helps it do things faster and better. It's a way for your computer's brain (the CPU) to work together with other parts of your computer to do more complicated tasks quickly and efficiently.
Think about it like this - imagine you're building a big tower with lots of blocks. It would take you a long time to build it block by block, but if you had some special tools like a crane or a conveyor belt, you could stack the blocks much faster! That's kind of like what SSE3 does for your computer.
SSE3 stands for Streaming SIMD Extensions 3, which is basically a fancy way of saying that it helps your computer process lots of data at once. It works by using something called SIMD (Single Instruction Multiple Data) technology. This means that with one instruction, the CPU can process multiple pieces of data at the same time.
So, let's say you're playing a game on your computer that has lots of different characters running around on the screen. Without SSE3, your computer might have a hard time keeping up and the game could run slow or choppy. But with SSE3, your computer can process all those characters at once and make the game run much smoother.
Overall, SSE3 is just one of many tools that help your computer work faster and better. It's kind of like having a super power that makes your computer able to do things that it couldn't do otherwise!