Windows Phone Thoughts: Run Your iPaq 1910 at 300MHz?

There's been considerable buzz over on Brighthand as of late, where a programmer figured out how to control the XScale's CPU frequency on the iPaq 1910. It seems that Intel has released two XScale CPU's to the PDA market: one unit capable of running from 100MHz to 300MHz, and another unit capable of running from 100MHz to 400MHz. Both support 100MHz increments: think of it as a SpeedStep-like functionality on steroids (ergo the name XScale implying the ability to scale the speed up and down), with a machine instruction to switch speeds. Note that this is not overclocking the processor per se -- if anything, the 1910 seems to have been underclocked from the processor's maximum specs, perhaps for battery life or for other reasons HP didn't disclose.

Just as interesting is the fact that the 300MHz-based Pocket PCs are apparently using the exact same chip, but clocked at 300MHz. This includes both the Dell Axim and the ViewSonic V35. This also leads more credence to Christian Torring's thread where he thinks the V35 is the same unit as the Medion, Mitac, Packard Bell PocketGear (and possibly NEC MobilePro) units, with just the Viewsonic scaled up.

You can get info from the link above as well as on this thread. Note that: (a) as of this moment, this program is very prerelease--it only lets you scale up to 300MHz and not back down without a hard reset; (b) you're executing this program at your own risk, not ours. It might work perfectly, or you might void your warranty, or your screen might turn psychedelic colors, or your iPaq might sprout wings and fly away, for all I know. ;)