Yes, it does have the same memory bandwidth. We're only talking about 24
pins here
1. Only 64 of the pins of the SODIMM or DIMM are actual
data lines, the others being used for
clock/control signals,
address lines, and to supply power to the chips. As SODIMMs have fewer
chips, they require fewer address lines, and as they draw less power, they require fewer power and ground lines. Aside from the missing lines, SODIMMs behave in the same way as
DIMMs. The overall
bandwidth is the same.
1 - DDR SODIMMs actually have 16 more pins - 200 vs 184.