So I did a little research to find out if I could use my MacBook Air laptop for Bitcoin mining, and the only thing I found was that the 2013 version has a pretty good GPU, I guess an Intel quad core GT3, and I didn't really get any farther than that in terms of figuring out mining efficiency and whatnot, because I couldn't find any specs on the wiki where other GPUs were.
This is where I found the chart on the wiki:
https://en.bitcoin.it/wiki/Non-specialized_hardware_comparison#Intel