You won't find many powerful ARM chips that are in a DIP package. There are a couple from NXP (like the LPC810: https://learn.adafruit.com/getting-started-with

You won't find many powerful ARM chips that are in a DIP package. There are a couple from NXP (like the LPC810: https://learn.adafruit.com/getting-started-with-the-lpc810/introduction https://learn.adafruit.com/getting-started-with-the-lpc810/i...), but otherwise it's just not worth the chip manufacturers time to build something that would have such low demand (relative to all the other stuff they make).