WTF I3/I5/I7?

Intel I3

This is the “Start level” processor. It will have the lowest amount of cores and threads (more on that later), and, therefore - the lowest performance.

On the other hand, they will be the most power-effective and the coolest (meaning they don’t need good cooling systems), so I3 still can be a good choice in some use cases, such as:

• Mostly “office” work
• Laptops focused on battery life.

And I3 is CHEAP. Very CHEAP to buy and run.

Intel I5

This is the “standard level” processor. It will have reasonable cores and threads and reasonable performance, but nothing fancy.

They are not as power effective as I3, but still OK. Arguably, best price/output ratio.

Use them for:

• Anything unless you don’t need top-notch performance
• You need a good battery/performance ratio.

Intel I7

This is the “Advanced level” processor. It will heat a lot, needs a good cooling system but also will have great performance.

Eats battery for breakfast. Very (I’d say - unreasonably) costly.

Use them for:

• You need performance
• You primarily use a laptop connected to the mains