http://www.engadget.com/2015/12/01/lenovo-thinkpad-p40-yoga/

Lenovo's existingThinkPad Yoga 
<http://www.engadget.com/2015/09/02/lenovo-thinkpad-yoga-260-460/>hybrids have 
some power, but they're probably not your first choice for heavy-duty 
graphics work when they're saddled with integrated video.

Thankfully, you now have a beefier option: Lenovo is introducing the 
ThinkPad P40 Yoga, its first 2-in-1 laptop with workstation-level 3D 
hardware. It still folds back into a tablet (or tent, or presentation 
mode), but its Quadro M500M chipset should be speedy enough to handle 3D 
modelling and other GPU-heavy tasks. You'll have greater control over 
those images, too, thanks to an included pen that promises both 2,048 
levels of pressure and specially-tuned software that reportedly gets 
closer to the "pen to paper" feel.

You're looking at a fairly brawny machine in other respects.
Every P40 Yoga ships with Quadro graphics as well as a 6th-generation 
Core i7 processor and a 512GB SSD;
you can spec it up to 16GB of RAM, a 2,560 x 1,440 display and LTE data 
if you need more breathing room.

It's a heavy slate at 3.9 pounds, but you probably won't mind unless you 
like to sketch while standing up. The biggest catch may simply be the 
wait -- the P40 Yoga won't ship until the first quarter of 2016, when 
it'll start at $1,399.