> The test with povray compiled without optimisations on my pc has just 
> ended :  45 minutes  13.0 seconds (2713 seconds)
> 
> 3 seconds longer : this is not signifiant.

	So if I understand you correctly, you do obtain:

gcc 3.2.2 -march=i586     : 45 minutes 13 seconds ( 2713 seconds )
gcc 3.2.2 -march=pentium4 : 36 minutes 43 seconds ( 2203 seconds )
icc 8.0   -tpp7           : 33 minutes 01 seconds ( 1981 seconds )

	Is this right ?

	I'd be interested if you could post the full gcc/icc command-line
that you actually used to compile the binaries  :-)

	- NC

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