The Qualcomm Snapdragon 400 APQ8028 is an entry-level ARM-SoC for Android smartphones and tablets. It offers four Cortex-A7 cores clocked at up to 1.6 GHz (Quad-Core) as well as an Adreno 305 graphics card at 450 MHz. The chip is manufactured in 28 nm LP at TSMC.
The Qualcomm MSM8230 (Snapdragon S4 Plus series) is a ARM based high-end smartphone SoC in 2012. It contains two Krait (ARMv7) CPU cores at up to 1.2 GHz, a Adreno 305 GPU, a single channel LPDDR2 memory controller and radio elements. The chip is produced in 28nm LP (low power process) at TSMC. Compared to the MSM8930, the 8230 lacks LTE.
The Krait cores offer a slightly better performance as the standard Cortex-A9 cores and are compatible to the NEON SIMD extensions.
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)
Average Benchmarks Qualcomm Snapdragon 400 APQ8028 → 100%n=12
Average Benchmarks Qualcomm Snapdragon S4 Plus MSM8230 → 74%n=12
Average Benchmarks Rockchip RK3066 1.5 GHz → 64%n=12
- Range of benchmark values for this graphics card - Average benchmark values for this graphics card * Smaller numbers mean a higher performance 1 This benchmark is not used for the average calculation
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