You have raised a good point about the potential risks and limited rewards of upgrading the Pi 2 to GigE, but I am less convinced about the continued requirement for the Pi 2 model being driven by it's slower clock and resulting lower power requirements. If that were the case, could not one simply buy a Pi 3, downclock it to 900MHz, and disable the onboard WiFi?ejolson wrote: ↑Thu Jun 07, 2018 5:30 pmUpgrading to gigabit buys you at most a 3x performance increase, in the case of my setup only 2x, and a whole slew of flow control requirements because the gigabit adapter can not actually receive at gigabit speeds
The original 3B barely works at 1.2Ghz, not because of thermal cooling which can be easily supplemented, but because of the power regulation circuitry. This is the invisible upgrade that makes 1.4 Ghz reliable on the 3B+.
Adding gigabit networking and 1.4 Ghz clock speeds to the 2B would significantly increase the power consumption and that would pretty much negate many of the reasons for even having such a model.
I suspect that in many cases the demand for the Pi2 model is driven specifically by its lack of onboard WiFi hardware (which may be a requirement in some commercial applications, where simply disabling the WiFi in software may not be acceptable for security reasons).
Whatever the reason for the Pi 2 sales, the newer SOC package does have better thermal performance, so I would think utilizing it for both the Pi 3b+ and a new Pi 2b+ would be a plus all around (no pun intended).
This would give better thermal performance for the end user, and even if they bumped the performance up to 1Ghz, this would still allow Broadcom and the Pi Foundation to utilize otherwise unusable lower binned parts.