lthown wrote:t will eat up your battery faster! It has to keep the card powered.
Only starting up is slower a little bit, after that running from RAM is absolutely the same.
You should check power consumption of flash memory, it is not a big deal either. I am not saying that you are not right, but difference is not significant, especially if you compare it to 5-10 minutes of WiFi/3G net browsing or GPS navigation.
Anyway, it is really off topic here. Everybody can try it, then decide if it is worth the efforts/resources or not.