Which is better for network communication, the STM32F429 or the STM32F407?

[jacobli]

Which is better for network communication, STM32F429 or STM32F407? I would like to ask for your opinion, and is it possible to use DMA transfer? Or maybe any other good solutions?

[ag123]

stm32f429 has much more stuff on the chip, they are there in the specs, among them are stm32f429 has fmc (so it can use sdram) and it has DMA2D ('Chrom-ART accelerator' / DMA to display), this is that demo
https://www.youtube.com/watch?v=jCDtjKNwrLc
https://www.youtube.com/watch?v=bRNcfsDIc2A
and it isn't surprising that stm32f429 is a pretty much more expensive chip vs stm32f407 which is quite 'basic'

[mrburnette]

Which is better for network communication, STM32F429 or STM32F407? I would like to ask for your opinion, and is it possible to use DMA transfer? Or maybe any other good solutions?

This is a question that should not be asked as there is no answer without knowing the context of the design/usage.

When contemplating a project, do some Internet research and find a similar project or usage that maps your primary needs. For example, data acquisition project should completely identify providing support for all sensors utilized. If RF is needed, then that is a secondary component, easily satisfied.

If building an RF router/repeater/mesh project, then selecting the appropriate uC to support the designed protocols is job #1.

Even small home projects need to be approached from an engineering prospective. Research, research, and research some more. As far as asking about DMA, you should be able to determine that by consulting the uC datasheet as it is prominently shown in AN4031 (PDF)

... and as AG123 points out, chip features does affect the end-user price.