Why is this computer so cheap?

It's on the low end of I7s (2.0ghz), has regular integrated graphics chip, it's a tiny bit heavier (0.5lbs more) than regular laptops, it's Lenovo, not Sony, Hp or Toshiba, but it does look good for the price tbh

Because it doesn't have dedicated GPU/Video Card.
It uses Intel HD Graphics 4400 which is included with the CPU.

In other words - Won't be able to play games properly.

The price look's very good but the GPU (Graphic processing unit) is a intregaded chip in the Intel core i7, it's deliver high-Speed processing (surving on the internet or…) but far away from a Gaming PC (High-Performace gaming), but overall it's pretty cheap!

No dedicated GPU, not optimized for being light and slim. Lenova, for what it's worth, is a great brand. It used to be an IBM product, but now it's a separate company. I own one of their laptops and am very pleased with its quality, even if it does have Windows 8.1 and not 7 on it. You won't be able to play any serious games on it, but for general personal/business use, it'll definitely do well.

Really heavy in my opinion. I like light laptops.