I have noticed that the Mountaineer Ethernet Mainboard uses the larger 100 pin STM32F407 with built in ethernet. All of the newer GHI boards use the smaller 64 pin STM32F405. When creating the FEZ Cerbuino Net the STM32F405 was used with the ENC28xxx Ethernet chip instead of the STM32F407.
Why not use the build in Ethernet of the STM32Fxxx family instead of the ENC28? Are there any performance reasons? Does SDK Package 2013 R2 support the internal ethernet?
This post about the “Blue Genie” is what got me thinking about it. https://www.ghielectronics.com/community/forum/topic?id=13055
Justin is using the new SMT32F427 that has more memory and the built in Ethernet.
I am sure there is a reason out there, I just couldn’t find it searching the forum. (I might have even asked this before but I have searched for over 2 hours for the answer.)