Check your Ram bus speed

I just got a G5 iMac with 512mb of ram and when i checked the ram bus through Teminal:

copy/paste

ioreg -p IODeviceTree -n memory -S | grep ram-


if the results come up with

"ram-layout-architecture" = <00000002>

then you have 64 bit bus size

if the results are

"ram-layout-architecture" = <00000001>

then you have 128 bit bus size.

Having only one chip causes you to have 64 bit, while
having 2 identical chips (i.e. 2x512 or 2x1gb) you will
then have a 128 bit bus which i think gives you faster peformance.

I just got 2 samsung 1gb ddr400 pc3200 chips for $249 a piece and
installed them and i feel a difference in the iMac now.