As streaming media applications such as video and multi-media become common, the demands for faster data rates will increase and create new applications that will benefit from the higher bandwidth offered by category 6.
Difference between category 5e and category 6 is in the transmission performance, and extension of the allowed bandwidth from 100 MHz for category 5e to 200 MHz for category 6.
Cat6 gives better insertion loss, near end crosstalk (NEXT), return loss, and equal level far end crosstalk (ELFEXT).
Because of its greater transmission performance and better immunity from external noise, systems operating over 6 cabling will have fewer errors vs. category 5e for current applications.