Rockchip RK3066 1.5 GHz vs HiSilicon Kirin 620 vs HiSilicon Kirin 650

Rockchip RK3066 1.5 GHz

The Rockchip RK3066 is a cheap ARM based SoC for Tablets and Smartphones. It integrates two ARM Cortex-A9 (ARMv7) CPU cores with NEON extensions, a ARM Mali-400MP4 (quad-core clocked at 250 MHz) graphics card and a video de- and encoder as main components. The integrated memory controller supports a maximum of 2 GB DDR1, DDR2 or DDR3 memory.

The CPU cores can be clocked up to 1.6 GHz depending on the cooling solution of the tablet / smartphone.

Additional Features according to Wikipedia

• VPU (Video Processing Unit) Multi-Media Processor supporting 1080p image and video decoding
• HDMI 1.4 Interface
• 2-channels TFT LCD Interface with 5 layers and 3D Display (1920×1080 Maximum Display Size)
• USB 2.0 Interface
• SD/MMC Interface

HiSilicon Kirin 620

The HiSilicon Kirin 620 is an ARM-based octa core SoC for mid-range smartphones. It was announced at the end of 2014 and features eight ARM Cortex-A53 cores at 1.2 GHz (max.). Furthermore, the processor integrates a ARM Mali-450 MP4 graphics card, an LPDDR3 memory controller, an LTE Cat.4 modem, 802.11n WiFi and Bluetooth 4.0. The chip is manufactured in 28nm and relatively power efficient.

HiSilicon Kirin 650

The HiSilicon Kirin 650 is an ARM-based octa-core SoC for mid-range smartphones and tablets. It was announced early 2016 and features eight ARM Cortex-A53 cores. Four cores can be clocked with up to 1.7 GHz (power saving cores) and four with up to 2 GHz (performance cores). Furthermore, a ARM Mali-T830 MP2 graphics card (at 600 MHz with 40.8 GFLOPS), a 64-Bit LPDDR3 memory controller and a dual-sim capable LTE Cat. 6 (max. 300 MBit/s and GSM, WCDMA, UMTS, HSPA+) radio are integrated in the SoC.

The processor performance can be compared with the older Kirin 930 and therefore sufficient for daily usage as browsing and non demanding apps. High-end SoCs with Cortex-A57 or A72 cores however should be noticeably faster.

The SoC is produced in a modern 16nm FinFET process and is therefore very power efficient.