$3K -5760 cuda cores -12GB VRAM

It's a little out of my price range but pretty damn cool. The price per core is relatively high compared to the lower end cards but would allow you to stuff a ton of cuda cores in a single box. I would love to stuff my quad gpu rig with these and have over 23,000 cuda cores. I will just have to keep dreaming.

http://www.engadget.com/2014/03/25/nvidia-titan-z-gpu/