Why Choose an 8-Layer Board? (The Technical "Why")

• Power Integrity: You can dedicate two entire inner layers to Power (3.3V, 5V, 12V) and Ground, ensuring a stable voltage supply for high-speed chips.
• Routing Space: With 4 signal layers, it is easier to route high-speed differential pairs (like USB 3.0, HDMI, DDR4) without crossing over each other, which improves signal quality.
• EMC/EMI Compliance: The inner ground planes act as shields, preventing electromagnetic interference from disrupting the circuit or leaking to other devices.