I had a 1GB that I used in my Nikon Coolpix 4500. It did use a little more battery power than a compact flash card, but not too much. I had to get rid of it though for the lag time on startup, and the speed at which images were saved to it.
Way too slow man...
Couldve just been the coolpix. might work better in other digital cameras. I traded it in for 2 512 CF cards.

Z~
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...all I ask is a tall ship and a star to steer her by.