[IDEA] Rapsberry Pi 4

[Tim Curtis]

The most important upgrade:

For example, Ethernet speed used to be hampered because its connection to the main SoC had to be through an on-PCB USB port. On the Pi 4, Broadcom’s BCM54213 Gigabit Ethernet PHY has appeared, connected at full bandwidth to a MAC on the BCM2711 via a dedicated RGMII interface.

For the first time on a Pi, two USB 3 connectors have appeared, attached to the main SoC via a single lane of PCI Express – so the total user port count is now two USB 2 and two USB 3.

No more shared USB/LAN. 

Thats interesting. I agree it's a very important hardware improvement. It should make it possible to send all those crazy high DSD rates to a USB DAC.