Which laptop for computer science studies?

I'm studying computer science before next year and looking for a laptop or even a convertible.

The price should be less than 600 or 700 euro.

My question therefore, would you rather with a laptop or a convertible recommend and best still an accurate product, with which you have made good experiences, for example.

It does not matter. You hardly need any computing power, so every computer will be enough.

So it depends only on your preferences

A used Thinkpad eg the x230, refurbished, with SSD and i7 CPU, 8 or 16 GB RAM, new battery, you come to well under 600/700 Euro but have a top device.