The Pi5 has the advantage over a Pi4 of not only a faster CPU but the real step 
up over the Pi4 is that you can install the file system on a M2 SSD and not 
have to run off the SD card.

But if you look at the price, you get more for the same money if you buy a 
low-end Intel PC from a place like Newegg.  They offer a refurbished Intel I5 
with 4gb RAM and SSD for $95.    This might seem like it costs $10 more than 
the Pi5 but the PC has a power supply, case, and cooling fan and the SSD is 
included too.    So it is a bit cheaper than the Pi5.

I think the Raspberry Pi is very good for my robotics projects that have to run 
off battery power and have very limited internal space for the control 
electronics.   But if you are building a machine that runs off AC mains power 
and is not portable, why bother with a Raspberry Pi?

The Pi4 or even Pi3 might be OK for driving the milling machine while it is 
cutting metal but you do other things like software updates, compiles, and 
visualizations. 




> On Apr 9, 2024, at 9:45 AM, John Dammeyer <jo...@autoartisans.com> wrote:
> 
> Hi all,
> 
> Will the Pi5  be any better for LinuxCNC than the Pi4 with a MESA Ethernet
> Controller or is the Pi4 already more than what LinuxCNC requires?
> 
> John
> 
> 
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