I tested udoo quad with AnTuTu and one another benchmark app. Both showed 1 core. Is any specific reason for this? Result about 7200 points.
The new Android image (1.2) is now available and the core bug has been fixed http://www.udoo.org/android-img-1-2-now-available/
This problem is solved. Antutu now shows 4 cores, result 11310 points. But voice over HDMI is still not working.
Just to confirm, AnTuTu showed me 11409 points with Udoo Android version 1.2. (details showed CPU 996 MHz (x4)). According to the overview at the end of AnTuTu that's about 75% of the performance of a HTC One X mobile phone with a 1,5 Ghz Quad Core processor, which currently costs about 300 Euro. So I think that's really not bad for the Udoo so far and I'm curious if this could even get better with the next versions of Udoo Android.