Which Computer should I get for MC?

I need a computer that I can play Minecraft on about 40 FPS

1. AMD A6 6400K - HD 8470d - 4GB RAM
2. AMD A8 6500 - HD 8570D - 8GB RAM
3. Intel i5-4440 - UMA - 8gm RAM

I don't know much about PCS so I just wanted to share these parts.

I think 2.

Forget APUs or 'all in one' / integrated graphics (eg. All of those) if you want anything like serious gaming performance.

Get a machine that has a separate, plug-in Video card and a reasonable speed CPU.

AMD FX- series CPUs are generally a bit cheaper for a given performance than Intel CPUs, but it's down to what machines are available if you are not going to build it yourself.

(APUs - the AMD A-series - have both the CPU and the graphics system in the same 'chip' package. They are good for general PCs for web browsing, word processing, multimedia etc. But the graphics system is a fraction of the power of a basic stand-alone gaming video card.
The Intel i3 & i5 series are similar, they can have basic graphics but not Gaming level without an external video card.)