"In this article we will try to answer the following three questions:
1.How well will the Pentium 4 and Athlon perform with software that is compiled with newer compilers (MS Visual 7.0 and Intel C
2.Can better compilers automatically create SSE-2 optimized code from simple C++ code?
3.Can Pentium 4 aware compilers boost the Pentium 4's floating-point performance past the strong FPU of the Athlon?" More at Ace's Hardware.