I am just wondering is the i3 2100 laggy on minecraft? Also what is your guys opinon on the a8 3870k for minecraft. With the a8 3870k are the graphics good enough for no additional graphics card? Thanks
Sorry bud but that's just not gonna cut it. You may be able to "play" Minecraft but you're gonna be looking at glorified slideshow.
CPU just has to be good enough to "feed" your Graphics Card frames that it can render. The i3 is plenty fine for gaming you just need ANY modern graphics card.
Under $100 is adequate but the sweetspot is under $200. The cards that are just under 200 are VASTLY better dollar/frame ratio than the one's under 100 which are typically not created with gaming in mind.