From a Internal conference of MTK, some guys get the information about MTK6592,
A image shows that tested by Antutu, score at 29600, near 30000.
and the guys said this test is based on sample which only with 1.7GHz. But the formal version should be with 2.0Ghz Main frequency. it should be much higher. and they are working on this. it should be used production in Nov.
