4-layer PCB vs. 6-layer PCB

4-layer PCB vs. 6-layer PCB

The DDR400 memory module with a 4-layer PCB is acceptable for multi-use.
The concept that 4-layer PCBs are not acceptable to many power users is due to many low-cost, poor quality 4-layer memory modules in the market.
However, high-capacity memory modules are not necessary for some uses.
Even though a memory module is built by the 4-layer PCB,
its performance will be able to surpass the 6-layer PCB by a proper circuit structure and design technique.
Considering that, CENTURY MICRO reassessed the basics of memory modules, and we released the CE040 to satisfy all users.
The CE040 is a very simple memory module which has 4 SDRAMs and 128MB or 256MB memory capacity respectively.
Although it is a low-end model which was built with the 4-layer PCB design,
the impedance, the signal integrity, and the anti-cross talk are controled accurately by the efficient wiring.
The CE040 is a high-performance memory module. We believe its functional beauty is accepted by all users.

■ 1st Outer-layer

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■ 4th Outer-layer

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■ CAD Image

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