Prism makes good use of the 33 MHz processor that it uses. PocketMark
gives the Prism a 192 rating overall (204/126/199) compared to a 125 rating
(129/101/132) for the Visor Deluxe. In actual use, the Prism blows
away the VDX. I had Star
Pilot 3.10 refresh its greyscale night sky view on City magnitude
setting with constellation lines turned on. The Prism took five seconds
to finish, while the Visor Deluxe took 14 seconds. Under Rural magnitude
(where more stars are calculated and drawn), the Prism took 56 seconds
and the Visor Deluxe took 1:06 -- not too much longer.
I then tried Dr. Mario on Liberty
on both devices. The game is useless on a Visor Deluxe unless it
is overclocked, but ran at an acceptable speed on the Prism. It seems
that number-crunching is only marginally faster on the Prism, but functions
like screen drawing are much faster.
Handspring says that the Visor Prism offers two weeks of "normal use"
or six hours of continuous use with a full recharge taking 1.5-2 hours.
I know that there is plenty of religious discussion on the pros and cons
of a internal rechargeable battery, but I think it is the right thing to
have in a color Visor. Because of the heavy usage I give my Visor
when reviewing Springboard modules and software, I went through batteries
in 2-3 weeks. Now I don't have that problem anymore. Hopefully
Springboard modules will take the VisorPhone's lead and become rechargeable
I found battery life to be sufficient. I only recharged the Prism
at night, and the meter only dropped by about 20%. The cradle that
the Prism uses has a jack on the USB connector for the power supply to
plug into. I liked this because it keeps the cable out of the way.
For those that travel, Handspring offers a Travel Charger ($34.99) that
will charge your Prism and Springboard modules that support in-handheld
charging like the VisorPhone.
Springboard modules >>