But the iPad took the lead with an impressive 105% growth this year from 4.8% market share last year, clearly accelerating as the preferred mobile online shopping device.

FORBES: Apple: What Black Friday May Mean for iPads

Tegra 4-based tablet reference designs offer a technical "recipe" for mobile device developers using the new mobile processor from NVIDIA, significantly accelerating the process of developing powerful new tablets.

ENGADGET: Tegra 4 reference tablets use SanDisk iNAND Extreme, mate a fast CPU with fast storage