Dual DIGIC 5+ image processors capable of delivering approximately 17 times more processing speed than DIGIC 4
Having the same MP as the 7D, shouldn't this camera have say... 17 times faster burst rate?
Now... before anybody shoot me, let me make it clear that I'm not asking for a 136 fps. I personally think 14fps is just right. I just like to know how the 17 times faster processor being utilized in this camera.
I think it is unlikely that the Image Processor is the limiting factor for frame rate. Mirror, shutter, Card/Buffer IO, etc could well be. My guess is that the IO buffer is a critical aspect for fps and shot to shot time.
Note that RAW shooting with larger files is almost always the same or slower than JPEG, although less processing is done. For JPEG, although you need to do all the conversion, compression, processing, your files are smaller and the speed is faster. So my guess is that IO Buffer plays a significant role in fps. To see the pure image processing capabilities, you need to look at JPEG, where smaller files results in less IO but more image processing is happening.
The fact that this camera can do 14fps JPEG while performing more calculations in terms of CA correction, iTR AF, AF Tracking, etc, shows its processing prowess. Also note that processing 61 AF points instead of the 19 from 7D adds a multiplier to the processing requirements of the AF features I have mentioned as well.