Smallest case that can still fit a reasonably powerful gaming pc?

Basically no idea what to do here, I always use full tower cases, but now I have a bro who is low on space but still wants a decent pc.  I think something that can fit a 750ti should work, but like I said I have no idea on how to small form case.

Check these out:

http://www.newegg.com/Product/Product.aspx?Item=N82E16811119299 http://www.newegg.com/Product/Product.aspx?Item=N82E16811139033 http://www.newegg.com/Product/Product.aspx?Item=N82E16811163252

intel 

http://pcpartpicker.com/user/ACcino96/saved/3UzH

amd apu

http://pcpartpicker.com/user/Grassyloki/saved/3YS7

its just a base. 

intel 

http://pcpartpicker.com/user/ACcino96/saved/3UzH

amd apu

http://pcpartpicker.com/user/Grassyloki/saved/3YS7

its just a base. 

Smallest would probably be Coolermaster CM 130 or the Haf 915F. The benefit is that you can use full size GPU cards.

I personally use a fractal node 304 and you can fit a high end system in that look at my profile for full specs.  

Absolute smallest would probably be the EVGA Hadron Air. It isn't for everyone and isn't perfect, but it is definitely a solid case. If you're looking for as small as possible, it should definitely be considered.

Thanks guys! I'll give these a look.

+1 on the Node 304

Here's my specs:

http://pcpartpicker.com/p/2iyxk