Useful for developers only !
Android NBench is a native port of BYTE's BYTEmark CPU benchmark.
The benchmark was designed to expose the capabilities of a system's CPU, FPU, memory and C compiler performance. Supports Arm v5, Arm v7, x86 and Mips32 CPUs. Only a SINGLE core is benchmarked, but it gives real world results since few applications use more than one core.
The results can be published and seen on http://www.tux.org/~mayer/ and lets you compare your Android phone with desktop computers or high-end servers.