Rambus Technology: 16 Bit Vs. 32 Bit, Continued
Signaling path and termination resistors with the 32 bit Rambus interface.
Serial signalling with a 16 bit module.
Serial signalling with a 32 bit module.
The two variants are mechanically different, so the modules are not compatible to one another.
Mechanically incompatible: the 16 bit interface is based on 184 pins, while the 32 bit interface requires 232 pins.
Comparison of DDR and RDRAM interface. With DDR, the termination resistors are on the motherboard.