DIGIC 5 processor is six times faster than DIGIC 4 and DIGIC 5+ is three times faster than DIGIC 5, the Canon EOS 5D Mark II has a DIGIC 4 processor, Canon EOS 7D uses two separate processors, working in parallel dual DIGIC 4 processors.The New Canon S100, PowerShot G1 X both of them have a DIGIC 5, and the Canon EOS-1D X features dual DIGIC 5+ processors.
The EOS-1D X sensor has a 16-channel, dual line readout, compared to the 8-channel, single line design in the previous generation of chips. So 1D X have more pipes to get data from sensor, you get 12fps in RAW+JPEG mode and 14-bit color on every image and ISO 100 to 51,200 (standard ISO range) on the EOS-1D X — without any ISO expansion applied.
