Can i run pc133 and ddr400 ram on the same motherboard?

[Nuvamp]

would i be able to run pc 133 and ddr400 ram on the same board together?

 

[o1die]

No. You have to choose which type to use, no matter what board you have. The old k7s5a ecs board had those types of ram, but you could only use one at a time.