How to increase keyboard key repeat rate on OS X? I know how to set the key repeat rate using System Preferences &gt; Keyboard but it looks that the fastest settings is not enough.

Is there any way to speed up even more?

I do not know if others encountered the same issue, but I'm using a MacBook Pro, model 2010.
You can also change the preference keys by running the following in Terminal:
defaults write -g InitialKeyRepeat -int 10 # normal minimum is 15 (225 ms)
defaults write -g KeyRepeat -int 1 # normal minimum is 2 (30 ms)

The changes aren't applied until you log out and back in. KeyRepeat can't be set between 2 (30 ms) and 1 (15 ms) though.
I also use KeyRemap4MacBook. I've set the repeat rates to 40 ms and the initial repeat rates to 150 ms.