PC Perspective has a great Crysis Demo Overview and Testing Setup

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Everyone can run the official demo benchmarks with these two .bat files which are located on the \Bin32\ folder:

Benchmark_CPU.bat  (for benchmarking your processor)
Benchmark_GPU.bat  (for benchmarking your graphics card)

Allow the test to run at least two times to get an accurate result. If you don't want to wait all the 4 runs to complete you can either press ESC after two passes have been completed or you can edit these two configuration files which are located on the \Game\Config\ folder:

benchmark_cpu.cfg (demo_num_runs = 2)
benchmark_gpu.cfg (demo_num_runs = 2)          Post your scores and comment in here