Initially I posted this in the Arduino forum and forgot about it, but I just saw a post in another topic and didn't want to reply there off-topic so I'll paste it here instead: BTW: My vote is more DMA RAM, enougth to run dual buffered resonable display (320x240, 8 bit colour) with Wifi n BTE. 74*2K...

I uploaded some time ago a library that I've been working on: https://github.com/jeanlemotan/jlm-back-buffer. It's meant to be used on top of the Adafruit GFX lib and should work with any SPI display supported by the adafruit lib. It allows very fast screen refresh rates with zero flicker and config...