Intel Celeron 600 "Coppermine128"

The 440BX platform helped to avoid any possible bottlenecks by increasing the FSB/memory bus frequencies from 66MHz to 100MHz this effectively increased the available memory bandwidth by 50% to 800MB/s.

At the time when the 440LX - 440BX transition was being made, the benchmarks available as well as the games being played did not illustrate a need for something faster than a 66MHz FSB/memory bus. The reason behind this was that they simply weren't stressing all of the memory masters and thus weren't saturating the 800MB/s of memory bandwidth allowed by the 100MHz FSB/memory bus which made it seem as if there was no tangible performance difference between the 66MHz LX platform and the 100MHz BX platform.