On Monday during SIGGRAPH 2013, Samsung revealed its "evolved" Exynos 5 Octa SoC after tossing out teases on Twitter over the last several weeks. Called the Exynos 5420, the updated chip still separates its eight cores into two sets thanks to the big.LITTLE setup, so it will still only utilize four at a time. What Samsung has done is ripped out the three PowerVR SGX544MP3 GPU cores (which clocked at 533 MHz) and threw in six ARM Mali-T628 GPU cores.
Samsung indicated that it has also cranked up the clock speeds of the chip's CPU cores, pushing the four Cortex-A15 cores from 1.6 GHz to 1.8 GHz and the four Cortex-A7 cores from 1.2 GHz to 1.3 GHz. Samsung said this presents a 20 percent improvement in processing capability over the former Exynos 5 Octa chip, the Exynos 5410, by optimizing the power saving design.
"The multiple image compression (MIC) IP block inside this System-on-Chip successfully lowers the total system power when bringing pictures or multimedia from memory to display panel," the company said. "This feature results in maximizing the usage hours of mobile devices with a high-resolution display such as WQXGA (250 x1600), in particular when browsing the web or doing multimedia application requiring the frequent screen refresh."
The new chip also has a memory bandwidth of 14.9 GB/s paired with a dual-channel LPDDR3 at 933 MHz, enabling fast data processing and support for a full HD Wi-Fi display. It also contains a variety of full HD 60 frames per second video hardware codec engines for 1080p video recording and playback. The chip is even capable of performing General-Purpose computing on Graphics Processing Units (GPGPU), and supports OpenGL ES 3.0 and Full Profile Open CL 1.1.
"ARM welcomes the latest addition to the successful Exynos Octa 5 series, which uses ARM’s Mali GPU solution to dramatically improve graphics performance," said Pete Hutton, executive vice president & general manager, Media Processing Division, ARM. "ARM big.LITTLE and ARM Artisan Physical IP technologies continue to be at the heart of the Octa series and now complement the new functionality brought by ARM GPU Compute. This combination enables unprecedented capabilities in areas such as facial detection and gesture control, and brings desktop-quality editing of images and video to mobile devices."
The new family of Exynos 5 Octa is currently sampling to customers and is scheduled for mass-production in August.