However, the new generation RK3168 hasn’t been quite as popular so, in this time, we’re taking a look at the two chips to spot the differences.
Up-front, they look similar – dual-core Cortex A9 architecture with ARMV7-A instruction set.
But things quickly change. The most fundamental difference is the manufacture process – the RK3066 is built at 40-nanometres, the RK3168 at only 28-nanometres. That should mean improved battery performance for the newer chip as it uses smaller, more efficient transistors.
However, the RK3168 tops out at only 1.2GHz whereas the RK3066 gets to as much as 1.6GHz. Given the same Cortex A9 architecture, the RK3066 is going to get through tasks faster.
As far as gaming goes, the major difference is the GPU core – Rockchip originally went for ARM’s quad-core Mali-400 MP4 design with a 250MHz clock rate in the RK3066 model. But it switched to PowerVR for the RK3168, going with a PowerVR SGX540 core, topping 400MHz. Why the change, we’re not quite sure – other than the newer RK3168 chip must have had a different focus. The RK3066 still gets a run in some new devices despite the faster quad-core RK3188 doing a roaring trade amongst China’s tablet makers.
What we’re not seeing is the same up-take of its more recent dual-core RK3168 SoC CPU.
Boiling it down, the RK3066 would be our choice for mini PC use where you want good performance and gaming; the RK3168 should provide better battery life and adequate gaming on the back of that PowerVR SGX540 core.
|CPU||Rockchip RK3168||Rockchip RK3066|
|Family Architecture||ARM Cortex A9||ARM Cortex A9|
|No of cores||2||2|
|Clock Speed||Up to 1.2GHz||Up to 1.6GHz|
|GPU||PowerVR SGX540||Mali-400 MP4|
|Memory Support||DDR-DDR3, 533MHz||DDR-DDR3, 533MHz|
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