update to the iPAQ 5455, the iPAQ 5555 featured
the 400MHz PXA255 XScale processor with a 200MHz
system bus. This doubled the rate of data flow between
the processor and the system memory and increased
performance considerably over past XScale units.
Other updates included the Pocket PC 2003 OS
- Windows Mobile 2003 for Pocket PC - and 128 MB
of RAM. The iPAQ 5555's myriad features make it
the most advanced Pocket PC available today.
The iPAQ 5555 has been discontinued, but is still available from eBay sellers.