This statements below belong to the review at the link above.
Prior to writing this update, there'd been speculation around the Internet that the camera actually performed faster with slower memory cards, the theory being that these cards better matched the camera's internal operating speed. I'm not sure where this rumor got started, but it clearly wasn't the case with our production sample. We tested it with a wide range of memory cards, and found that, while cards faster than 4x produced only very slight improvements in buffer-clearing times, the faster cards were in all cases faster than slower ones. (The camera does
take some advantage of modern, reasonably fast memory cards though. While we found only minor differences in write speeds between 4x and 80x cards (or SanDisk's Ultra and Extreme cards), old non-speed-rated cards were very
slow. Bottom line, our advice would be to make sure you purchase name-brand cards known to be at least reasonably fast, but the Coolpix 8800's performance doesn't seem to justify the investment in the highest-speed cards currently available.)