I thought Athlon machines had a 200 MHz bus. Is that not the case?
Although the current Athlon architecture is touted as having a 200 MHz bus, in practice the bus runs at 100MHz. The Athlon’s bus, which is based on the EV6 bus protocol from the DEC Alpha architecture, transfers data on both the rising and falling edges of the clock, much like the AGP bus does. Because of this practice, the Althon’s bus can attain a data transfer rate equivalent to a 200 MHz bus while running at 100 MHz. Soon, Athlon systems will be available with a 133/266 MHz bus using this same “double data rate” capability.
