--- numpy/numpy/distutils/intelccompiler.py	2011-09-08 14:14:03.000000000 +0200
+++ numpy/numpy/distutils/intelccompiler.py	2011-09-08 14:20:37.000000000 +0200
@@ -30,11 +30,11 @@
     """ A modified Intel x86_64 compiler compatible with a 64bit gcc built Python.
     """
     compiler_type = 'intelem'
-    cc_exe = 'icc -m64 -fPIC'
+    cc_exe = 'icc -m64 -fPIC -xHost -O3'
     cc_args = "-fPIC"
     def __init__ (self, verbose=0, dry_run=0, force=0):
         UnixCCompiler.__init__ (self, verbose,dry_run, force)
-        self.cc_exe = 'icc -m64 -fPIC'
+        self.cc_exe = 'icc -m64 -fPIC -xHost -O3'
         compiler = self.cc_exe
         self.set_executables(compiler=compiler,
                              compiler_so=compiler,