I was part of a program in college where I helped athletes with math homework.
I graduated a year ago.
I use both calculus and algebra at work, but it is all done by computers. Never by hand.
^ it is pretty common to reinstall Windows on a laptop first thing. I though most people generally did this. I always have and most people I know do. Same with a prebuilt desktop.
The majority of games do not use hyperthreading at all. (this is why a desktop i5 and i7 are same in games)
The i7 will blow the i5 away in any games that uses more than 2 cores. (this is the same as comparing a desktop i3 to a desktop i5)
Some games like LoL and MC will show no difference...
Get the i7. The i5 is a dual core.
laptops are really the only time an i7 is actually significantly better for gaming over an i5 due to mobile i5s being dual cores.