Can the hero tell me what to pay attention to when buying a notebook and what to check when opening the box?

If you buy books, it will be better after sale. No matter how good the brand is, there is no guarantee that there will be no problems after buying it.

Followed by cpu: main frequency, process, architecture, secondary cache, front-end bus frequency (now there is also qpi bus)

Memory: capacity, frequency, ddrIII is used more now (mine is still ddrII).

Graphics card: discrete graphics cards are better than integrated graphics cards, but they also generate more heat. Graphics card mainly depends on memory capacity, number of stream processors, numbers and other sound cards.

Network card: generally above 100M.

Hard disk: capacity, revolutions

Motherboard: This is generally not a problem.

Then there are various sockets (usb, card reader sockets, etc. ), whether there is a camera, whether there is a wireless network card, whether it supports Bluetooth and random software, whether it helps the system, whether it sends anti-virus software, whether it sends mice, keyboards, headphones and fans.

Unpacking is to see whether the white strip is damaged and complete, to ensure that it is not new, whether the serial number on the chassis is the same as that on the computer, whether it is the same model and so on. Open the screen to see if there are any problems (such as bright spots). If it doesn't affect the use, you can take the opportunity to ask the boss for a price reduction. If it is the pursuit of perfection, of course, you can't ask for a replacement immediately.

Whether the keyboard is easy to use, whether the touchpad is flexible, and whether there are poor workmanship in other parts.

It's more general. This requirement is still quite extensive. I suggest you find a friend to go with you. js is a little more now. ..

good luck