My little brother wants to play Minecraft constantly above 30 fps and maybe do a little recording, sometimes some light mods like Pixelmon. Should I go with:
i3 w/ dedicated GPU
i5 w/ HD 4600
AMD A8 or A10
My old laptop had an AMD E-450 which has an ok GPU but terrible CPU power, making it even worse than my mom's sandy bridge i3 w/ HD 3000 at Minecraft. Now I don't know if GPU or CPU is more important.
If your little brother is a student (which I am pretty sure he is), then you might want to check out the ThinkPad E545 from Lenovo's "student's" site which offers a little bit of a discount. The base price is $474, but upgrading it to the A10-5750m with the Radeon HD 8650g integrated graphics core works out to $541 before tax.
The HD 8650g is basically the most powerful integrated GPU you can get. It is over $100 more than the Acer so keep that in mind, however, this is the cheapest price you will see for a new laptop with an A10-5750m APU. Since this is a ThinkPad series laptop that name also adds in a bit of a price premium.