What cheap notebook to run RockSmith

Can anybody suggest a PC for me to buy?  I have a PC I'm perfectly happy with, but it won't run ROCKSMITH 2014.  I want to buy the cheapest Windows (preferably 8) PC notebook (or, better yet, tablet) that can run the program RockSmith 2014.

Per manufacturer's website:

PC Minimum Requirements
OS: Windows Vista / Windows 7 / Windows 8
Processor: 2.66 GHz Intel Core2 Duo E6750 or 2.8 GHz AMD Athlon 64 X2 5600+
Memory: 2 GB RAM
Video Card: 256 MB DirectX 9.0c-compliant with Shader Model 3.0 or higher (see supported list)*
Hard Drive Space: 12 GB
Sound: DirectX-compatible

PC Recommended
OS: Windows Vista / Windows 7 / Windows 8
Processor: 3.06 GHz Intel Core i3-540 or 3.30 GHz AMD Athlon II X3 455 or better
Memory: 4 GB RAM
Video Card: 256 MB DirectX 9.0c-compliant with Shader Model 3.0 or higher (see supported list)*
Hard Drive Space: 12 GB
Sound: DirectX-compatible

*Supported Video Cards at Time of Release
AMD Radeon HD 2600 XT / 3000 / 4000 / 5000 / 6000 / 7000 series
NVIDIA GeForce 8600 GT / 9 / 200 / 400 / 500 / 600 / 700 series

I want to buy a cheap--I'm open to used or new--light PC laptop (better yet, tablet; better yet tablet with removable keyboard).  PRICE IS BY FAR THE MOST SIGNIFICANT FACTOR.  Small would be great, so I can put it in my guitar case, but price is the main thing.

Any suggestions?  Alternatively, is there some master list of what PC contains what CPU and what GPU.  I mean a list ranked by performance.  If there is, then maybe I can answer my own question.

Thank you all.