Not much information about the CPU. It says only "ARM Cortex-A9 quad core @ 1.6Ghz". Makes me worried it's again one of those Allwinner or Rockchip cases. In other words, a lot of cores, high frequency and low performance. Number-marketing.
There's been some efforts to reverse-engineer the Mali 400 and write open drivers for it. I'm not sure if they're still making progress or if the project stalled though.