With latest drivers and SDK installed, I started a small program from CLI.
The white numbers blinking in black background show that current speed, combined from two Barts cores, is around 6.8G-7G per second, that means this small program is trying to exploring 6,800,000,000 to 7,000,000,000 possibilities per second.
And this is the case when charset is limited to a-Z0-9 and spaces, it would take about 8 hours to explore all possibilities in a 8-digit space.
This is not the most sophisticated setup, just a minor civilian one. At least I'm happy and satisfied with the numbers, it feeds my curiosity.
I tried to compile whitepixel-2 on latest Ubuntu, but it failed with a lot of undefined reference errors so I turned to a Windows program.