As mentioned previously, the Slot-1 Celeron(tm) CPUs are indeed clock multiplier locked, yet FSB speed unlocked. This means that as long as the user chooses the 400's 6.0x multiplier setting, they can select and experiment with any of the available bus speeds that their mainboard offers.

Here's a look at all of the "possible" overclocking combinations that the Celeron(tm) 400 could see on an Abit BH6 mainboard

Stock:	6.0 x 66MHz	=	400MHz
	6.0 x 75MHz	=	450MHz
	6.0 x 83MHz	=	498MHz
	6.0 x 100MHz	=	600MHz
	6.0 x 103MHz	=	618MHz*
	6.0 x 112MHz	=	672MHz*
	6.0 x 124MHz	=	744MHz*
	6.0 x 133MHz	=	798MHz*

*Virtually impossible to achieve

Just as with yesterday's Celeron(tm) 366, the Celeron(tm) 400 offers a cornucopia of overclocked speeds, although the high 6.0 clock lock makes anything over a 100MHz FSB nearly impossible.