Here is some test results:
official13 my13 ICC
sunspider 330.8ms +/- 0.7% 284.8ms +/- 1.1%
V8 4803 5084
Kraken 5140.2ms +/- 0.7% 4678.9ms +/- 0.9%
Aquarium 15-16 fps 22-30 fps
Tested on Win7 x64 and Intel Core2 CPU
Doesn't look bad at all.
Another question, I just read your wiki and saw several issues with Intel C++ compiler. Have you reported all the issues yet?