Hello I'm looking to buy a new laptop for school and mine craft these are my choices
K55A-BI5093B
Lenovo Laptop G50 (80E301GUUS)
The Lenovo has an amd a8 6410 with a dedicated Radeon r5
Next is the asus with an i5 and integrated Intel hd 4000
What would be the best for multitasking, Microsoft office, minecraft, and emails
Any Gaming or photo type editing will benefit from the Radeon r5
The reason manf use Intel for Graphics is to save money. They suck but if you are only doing business type apps like spreadsheets n word then they work well.
The screen draw changes from one app to the next will benefit from the Radeon as well.
I'm using a AMD Radeon R5 And here's the score I got. The D3D is Gaming Graphics 
6 if one and half a dozen of the other… In the grand scheme of things, they are going to be very similar in performance.
The R5