Good Minecraft FPS Computer?

I need a computer that has at least 40 fps on minecraft. I'm not going to build my own computer and will not consider it. My budget is 600 but I'd like it to be around 500.

Basically any computer over 400 should do the job, that is if your talking about pc not a laptop. Minecraft is an extremely easy game to run and isn't very resourceful.

Minecraft is a low demanding game, so even a computer with integrated graphics will surpass the recommended requirements for this game.

a good computer for this purpose is the Dell Inspiron i3647-2309BK Desktop for just $400
http://www.amazon.com/...00K0HMRH2/

it comes with Windows 8.1 including keyboard & mouse
the only missing parts are a monitor and speakers

suggestion for a monitor ($119)
http://www.amazon.com/...005LJWJSG/

HDMI to DVI cable (necessary for this PC and monitor because the PC has an HDMI output and the monitor has a DVI input) ($4.00)
http://www.amazon.com/...0002CZHN6/

total of $523 without shipping