Thanks, that's making a little more sense. I think this would be in the thumb implementation, which is the T part of the chip name. ARMv6TEJ.
JT's Digital World Zenithink 10 inches Cortex-A8 Ipad Clone ZT180
the linpack score is even much higher than Nexus One and Galaxy S
I think Zenithink just use a ARM11, and use ARM11-optimized JIT patch to get such a high score
With a JIT patch, a samsung i5700(ARM11 800MHz) can get a linpack score of 7.5-8Mlops
Compared with this, Zenithink's 1GHz ARM11 will get 9.5-10Mflops, which is sensiable.
While a true cortex-A8 without JIT get 7MFlops(Nexus One) or 8 MFlops(Samsung Galaxy S)