Rambus Boards: Cost Reduction Via Four-Layer Design
Four layer design for a board with 16 bit Rambus.
Four-layer design for a board with 32 bit Rambus.
Most of the P4 motherboard manufacturers use the four-layer technology in order to save on costs. Only Intel and Gigabyte use six layers, and even then, Gigabyte manages to offer its 850E board at a reasonable price. Comparing the two boards from Asus, the latter two images show the circuitry. By using the 16 bit RDRAM interface (Asus P4T533), more space is required than with the 32 bit interface on the Asus P4T533.