x86 - Data bus width and word size

Question

Will data bus width size change when word size changes?

I think that it will change because data bus width is usually in multiples of word size. So if word size changes, data bus width also changes.

Am I correct?

Answer 1

Not necessarily. The 8086/8088 both had a word size of 16-bits. The 8086 had a data bus of 16-bits, but the 8088 was only 8-bits. 80186/80188 and 80386/80386SX were similar.