Rockchip RK2918 1.2 GHz vs NXP i.MX 6SLL vs Broadcom BCM21664T

Rockchip RK2918 1.2 GHz

NXP i.MX 6SLL

The NXP i.MX 6SLL or i.MX6SLL (i.MX 6 Series, MCIMX6V7DVN10AB Part Number) is a single core processor for e-readers. It integrates a single ARM Cortex-A9 processor core clocked at up to 1 GHz and a 2D graphics accelerator called Pixel Processor PXP (including E-INK display controller EPDC with support of up to 2332x1650 and 5-bit greyscale). The integrated memory controller supports up to 400 MHz LPDDR2 or LPDDR3 (32-bit interface). Flash memory can be attached using eMMC 5.0 or SD 3.0 (three connections available). Furthermore, the SoC supports 2x USB 2.0 OTH with PHY. The chip is pin-compatible with the i.MX 6SoloLite which features an additional Vivante GC320 graphics card. WiFi, Bluetooth, GPS or other peripherals have to be connected with external chips.

Broadcom BCM21664T

The Broadcom BCM21664T is an ARM based entry-level SoC for smartphones that integrates two Cortex-A9 CPU cores clocked at up to 1.2 GHz and a HSPA+ modem with support for 21 Mbps HSDPA and 5.8 Mbps HSUPA. Furthermore, a VideoCore-IV GPU and a video decoder (H.264 1080p capable) and encoder (720p) are built into the SoC.