Looking for a laptop under $500, able to handle video editing software. Advice?

I'm checking out laptops for an associate and want to make sure I'm on the right track.

For video editing, it's good to have four cores, even with hyperthreading on a dual core, and to have fair graphics memory, as well as a high clock speed, correct?

My current consideration is here:
https://www.amazon.com/...01J1VAAOE/

https://www.amazon.com/...01LOV23YE/ (4 cores, 8 hyperthreading, but Win 7 and 2.6ghz at most with turboboost)
https://www.amazon.com/...01GVX0W0C/ (High speed processing)
https://www.amazon.com/...01GKDW634/ (4 cores, good speed, low storage, no webcam)

Opinions? Advice?

Yeah if you find it let me know because more like $2000.00.