Hi, Estel! To me it is actually quite big leap to 900 MHz -> 1.15 GHz. It is noticeable performance boost when I am using MyPaint. I have now constantly used N900 with max 1.15 GHz clock speed.. almost 2 years now. I know that there are devices that can not handle about 900 MHz clock speed without problems. So, I do not recommend to overclock devices. This can vary so much device to device. I only hope that Nokia or other manufacturer could do proper SkechBook digital device with good pressure sensitivity. N900 resistive screen is quite amazing, pressure sensitivity is so analog and accurate and we can draw with proper "pen" not "stylus". I like it a lot. Thanks!