The new Samsung Galaxy S4 comes with an Exynos octa-core CPU (in some countries you might get a "simpler" quad-core CPU). And the thought of having a 8-core CPU might be both inspiring as... horrifying. Most people stuggle to make their smartphones last through the day - how on earth will they be able to do that with a 8 core CPU in their smartphones?
Well... the thing is, more CPUs doesn't necessarily mean more power consumption. Besides, rather than octa, the Exynos 5 CPU would better be served by a dual-quad-core moniker. You see, it's one of the first CPUs to implement the big.LITTLE ARM architecture.
What this means is: you get a low-power quad-core Cortex-A7 CPU that can handle most of the tasks (while saving power), and a more powerful quad-core Cortex-A15 CPU ready to jump into action whenever needed.
So, you get both the power... and the power saving benefits.
Now we just need to wait and see if this dual-quad core approach really is better than the simpler 4-PLUS-1 technolgy from Nvidia used in the Tegra 3 and Tegra 4, where you have just a single low-power core besides the powerful quad-core.
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