Intel has added four more Core M’s to its list. Like the launch chips, these four are dual-core designs that support HyperThreading. Like the earlier chips, these are spec’d with a TDP of 4.5W.
However, these are faster than the launch models, with a base clock speed of 1.2GHz, which is burstable through Turbo up to 2.9GHz.
What really sets these chips apart from the initial Core M models is that their TDP is scalable, based on what the builder wants to do with it. For example if the chip is set to be used in a notebook with very little free space, the OEM could opt to drop the chip down to 3.5W and lose 600MHz in the process. A bulkier notebook could handle a hotter chip better, so a higher TDP can be used. Any one of these new chips could be tweaked to peak at 6W and add 200MHz to the clock. That would put a chip like the M-5Y71 at 1.4GHz, rather than 1.2GHz.
The chips also offer the same flexibility for graphics. The IGP in the initial Core M chips were clocked at 100MHz base, while these new CPUs start at 300MHz. The top-end clock for the top two models can reach 900MHz, whereas some of the launch models peak at 850MHz.
All four of these new models have officially launched, but it is likely that they will not hit the market until early 2015.