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I have an application where I need to examine a 420Hz signal.  With the greatly simplified code I have written, I am able to get 3 sample readings from the analog IO port per half-cycle, but my application needs at least 10 ( a 3x increase).  

Are there any recommendations for similar boards that have a higher clock speed (perhaps > 400MHz)?

-Thanks

-Mike 

no there isnt. but you dont wanna faster processor for this, you just have todo

this native, not managed.

id hook up a cheap attiny or mega to read the signals and than send the results to netduino per spi

or something like that. theres also stm8 that will do well.

They also make frequency converter chips.  You can look into using something like that and it will send the raw numeric readings to the Netduino.

Thanks for the replies.  

One thing that I many not have been clear on the application - i don't need to frequency, but the voltage level at 10k Samples/second.

Noom: you mentioned that I should get a " cheap attiny or mega to read the signals" - could you point me to what you are referring (sorry, still a bit of a newbie)?

-Thanks

attiny85 or stm8's - but that needs some c coding. if you dont know that, i wouldnt bother.