The Register: P4: total dog or really cooking?

When using the original code, a P4 system took a glacial 19 hours compared with just under 13 hours for a 933MHz PIII. But with code recompiled to use SSE2, the P4 galloped through the test in a shade over seven and a half hours.

"It all comes down to the fact that running today's code the P4 is a dog," Welter told The Reg. "But once the code is optimised for it then it really can wake up and perform quite nicely.