Index: src/cmake/OptimalOptions.cmake
===================================================================
--- src/cmake/OptimalOptions.cmake	(revision 13805)
+++ src/cmake/OptimalOptions.cmake	(working copy)
@@ -15,7 +15,7 @@
 	ENDIF(NV_SYSTEM_PROCESSOR STREQUAL "i686")
 
 	IF(NV_SYSTEM_PROCESSOR STREQUAL "x86_64")
-		SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=athlon64")
+		#SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=athlon64")
 		#SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=athlon64 -msse3")
 	ENDIF(NV_SYSTEM_PROCESSOR STREQUAL "x86_64")