Differences between these two laptops?

[IronWing]

I’m looking at these two laptops and trying to figure out if they are the same frame/motherboard. If I configure them identically, the price is different so I’m scratching my head about what is different.

https://www.lenovo.com/us/en/compare_product.html?isShare=1&shareData=%255B%257B%2522categoryCode%2522%253A%2522laptops%2522%252C%2522productNumber%2522%253A%255B%252221FACTO1WWUS3%2522%252C%252221FACTO1WWUS1%2522%255D%257D%255D

 

[quietdad2]

The two options show are exactly the same PC at exactly the same price. The difference is one of the is prebuilt and you can't change the options and the other gives you the ability' to change the configuration and upgrading or downgrading parts is going to change the price,