Samsung Exynos 7904 vs HiSilicon Kirin 620 vs HiSilicon Kirin 650

Samsung Exynos 7904

The Samsung Exynos 7904 (also called Exynos 7 Series) is a upper mid-range system-on-a-chip (SoC) for smartphones and tablets. It was launched early 2019 and features two Cortex-A73 cores clocked at up to 1.8 GHz. Furthermore, there are six power efficient Cortex-A53 cores at up to 1.6 GHz, an ARM Mali-G71 MP2 GPU and a LPDDR4x memory controller. The integrated LTE modem supports LTE Cat.12 3CA 600 Mbps download speeds and Cat.13 2CA 150 Mbps upload. 802.11ac WiFi, Bluetooth 5.0 and FM Radio are also in the chip. Compared to the older and faster Exynos 7885, the 7904 offers a slower clocked A73 cores (1.8 versus 2.2 GHz).

It is manufactured in 14nm FinFET at Samsung and therefore a rather power efficient SoC.

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.