In case anyone is interested to know:

On my AMD Phenom X4 9650 2.3GHz 6 GB Debian Linux system, up until today 
I used to compile POV-Ray with either the Intel icpc 11.0 compiler 
suite, or (very rarely) with GNU g++ 4.1.1.

Benchmarking results used to be clearly in favor of the Intel compiler, 
with typical differences in execution time of 10% and more.

I'm just testing with g++ 4.3.2 now, and (as I would have expected) the 
GNU suite has obviously improved. While it is still a tad behind on 
average, it quite obviously plays in the same league now as the 11.0 
version of Intel's compiler.

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