Atmega32-16pu vs atmega324p-20pu vs atmega644p-20pu

[kurtus420]

Hello, just have a question regarding performance differance in the following atmega's. Atmega32-16pu, Atmega324p-20pu and Atmega644-20pu, does Megadrum perform better with one or the other or does it just give you more saving capabilites? Does the 20mhz crystals make a differance compared to the atmega32 16mhz version performance wise?

[dmitri]

Hello, just have a question regarding performance differance in the following atmega's. Atmega32-16pu, Atmega324p-20pu and Atmega644-20pu, does Megadrum perform better with one or the other or does it just give you more saving capabilites? Does the 20mhz crystals make a differance compared to the atmega32 16mhz version performance wise?

At 20MHz it performs 25% faster but I myself cannot notice any difference. Atmega644 has more space to save configs/drum maps.

[kurtus420]

Thanks Dmitri, by faster do you mean faster loading or less latency. (not that this is a problem)

Hello, just have a question regarding performance differance in the following atmega's. Atmega32-16pu, Atmega324p-20pu and Atmega644-20pu, does Megadrum perform better with one or the other or does it just give you more saving capabilites? Does the 20mhz crystals make a differance compared to the atmega32 16mhz version performance wise?

At 20MHz it performs 25% faster but I myself cannot notice any difference. Atmega644 has more space to save configs/drum maps.

[dmitri]

Thanks Dmitri, by faster do you mean faster loading or less latency. (not that this is a problem)

Internal operation is faster. I guess you can can set Latency ~20% lower at 20MHz then at 16MHz before you notice degradation in MegaDrum performance. But with the same settings they will operate almost identically.

[kurtus420]

Thanks for clearing this up for me.

Thanks Dmitri, by faster do you mean faster loading or less latency. (not that this is a problem)

Internal operation is faster. I guess you can can set Latency ~20% lower at 20MHz then at 16MHz before you notice degradation in MegaDrum performance. But with the same settings they will operate almost identically.