Anandtech has coverage: http://www.anandtech.com/show/6768/samsung-details-exynos-5-octa-architecture-power-at-isscc-13
It's a big.LITTLE design, with 4 cores of each in 2 CPUs. The power efficient LITTLE quad core processor is designed to run most tasks, and the big cores use much more power for heavier computational tasks. The OS determines when to switch over from one CPU to another. Both cores are based on the same ARM v7 ISA.
The 4 ARM A7 LITTLE cores are very low power, maxing out under a Watt @ 1.2GHz full load (28nm process). But the 4 big A15 cores use a lot of power, up to almost 6W at full tilt. Ouch, won't see this in a phone.
It's a big.LITTLE design, with 4 cores of each in 2 CPUs. The power efficient LITTLE quad core processor is designed to run most tasks, and the big cores use much more power for heavier computational tasks. The OS determines when to switch over from one CPU to another. Both cores are based on the same ARM v7 ISA.
The 4 ARM A7 LITTLE cores are very low power, maxing out under a Watt @ 1.2GHz full load (28nm process). But the 4 big A15 cores use a lot of power, up to almost 6W at full tilt. Ouch, won't see this in a phone.