A few questions:
How fast can you flip between pictures?
Can you cross-fade?
Do pics fit in memory or are they on disk?
The res is 1024 x 768, looks great in person....pictures don't really do it justice.
I added some memory to the laptop so it transitions between photos fairly quick considering it is < 500 MHz!
To display the photos I'm using a software called screen paver which has all types of really nice transitions (<$15 USD). Makes it look really nice and smooth.
I have about 2 gigs of photos on the frame, which are stored on the HD....I may try and cut back on the number of pictures and try and go to a solid memory so the frame would be completely silent. Using the hard drive works pretty well, I can't say that there would be any performance gain by using flash memory.