Quad-core NVIDIA Kal-El chipset turns out penta-core, one more for the lazy jobs13
fifth, hitherto stealth "companion" core, which is still based on ARM's Cortex-A9 architecture, but hums at 500MHz, instead of 1GHz. It's no fifth wheel, though, as the extra core is meant to be active with tasks that can be done in a low-power state, like standby, music playback, and even some video playback, thus saving a great deal on battery life. why not just throttle down one of the existing 1GHz cores is beyond us, and in the competency of NVIDIA engineers, but this is hardly a new design decision.NVIDIA, however, just unveiled a
Marvell's Armada 628 ARM-based chipset has two cores that run at 1.5GHz, and a third one clocked at 624MHz for the mundane tasks, so this "companion core" design has probably proved more effective or easier to implement than dynamically underclocking one of the existing powerful cores.