ARM

ARM is the world’s leading semiconductor intellectual property (IP) supplier.

ARM licenses technology designs to semiconductor companies.
The partner companies pay an up-front license fee (several million dollars) to gain access to a design.
And also a royalty on every chip that uses the licensed design.

The major characteristics of RISC architecture are,
-> Relatively few instructions
-> Memory access limited to load and store instructions
-> Relatively few addressing modes
-> All operations are done within the registers of the CPU
-> Single cycle instruction execution

iPhone 5 - Apple A6
- a Dual-core ARM Custom Cortex-A7 CPU and a Tri-core PowerVR SGX543MP3 GPU

iPad 3 - Apple A5X
- a Dual-core ARM Cortex-A9 CPU and a Quad-core PowerVR SGX543MP4 GPU

NVIDIA’s Tegra 3
- a Quad-core ARM Cortex-A9 CPU and a 12-core GeForce GPU

Galaxy S III - Samsung Exynos 4412 Quad
- a Quad-core ARM Cortex-A9 CPU and a Quad-core ARM Mali-400 MP4 OC GPU

Galaxy 2 - Samsung Exynos 4210
- a Dual-core ARM Cortex-A9 CPU and a Quad-core ARM Mali-400 MP4 GPU

Motorola DEFY+ - TI OMAP 3620
- a single-core ARM Cortex-A8 CPU and a PowerVR SGX530 GPU

LG Optimus Net - Qualcomm Snapdragon S1 (MSM7227)
- a single-core ARM Cortex-A5 CPU and a Adreno 200 GPU

GE LOGIQ - TI DM6446 (DaVinci)
- a single-code ARM9 CPU and TMS320 C64x+ DSP core

Reference:
http://www.anandtech.com/show/6292/iphone-5-a6-not-a15-custom-core
http://ir.arm.com/phoenix.zhtml?c=197211&p=irol-homeprofile
http://en.wikipedia.org/wiki/Apple_Ax#List_of_Apple_SoCs
http://www.arm.com/products/processors/cortex-a/index.php
http://www.droid-life.com/2011/11/08/nvidia-makes-tegra-3-quad-core-processor-official-here-is-everything-you-ever-wanted-to-know-about-it/