OMAPclock is a Pocket PC overclocking applications that has some good options for Omap processors. OMAPclock was developed originally by a some Russian guys with the aim of speeding up the Motorola MPx range. By happy coincidence, HTC Wizard owners have discovered that it works on their devices too, and interest in the application has increased greatly. Okay, this is very much "use at your own risk" but it works really really great, overclocking the device from its 180Mhz to the better looking 247Mhz

- our result was enhancement of processor speed of 20%.

This application should run on any TI OMAP device, including Smartphones such as the C600, iMate SP5 but, again, everything you do to your pocket pc is at your own risk!
Remember, this probably will cause your phone/device to blowup or something. Don't use it if you are worried about that sort of thing.