Both Content Creation Winstone 2000 and Business Winstone 99 serve to test overall system performance, rather than isolating just the CPU. Still, they are extremely valuable in showing how the CPU performs in a system environment, especially if the test bed is kept totally static. The Pentium III Coppermine once again rules the roost, but most interesting, it's a CC Winstone 2000 dead heat between the Celeron 600 and the overclocked Celeron 550. In Business Winstone 99 testing, the Celeron 550 regains its lead over the Celeron 600.