HotHardware had the opportunity to play with an Intel Core M "Broadwell" based 12.5" Windows tablet at the IDF 2014 in San Francisco. The tablet packs the Core M 5Y70 and offers quite a punch, the site points out that Intel has succeeded in bringing notebook-class performance to fanless, tablet devices.
Here is a shot of the Broadwell-based tablet after running the Cinebench R11.5 multi-threaded benchmark and the OpenGL test. As you can see, the Intel HD Graphics 5300 in the tablet put up 16.96 frames per second. And the tablet's Core M 5Y70 scored 2.48 in the multi-threaded CPU benchmark. Those numbers are both significantly higher than we’ve seen with Atom-based platforms or AMD’s Beema and Mullins chips.