From a posting a Morphzone (i'm currently a long way from my efika)
I am looking at my 2 Efika RAM chips and I see the following part numbers:
SAMSUNG 643
K4H511638C-UCB3
H5116 CMI297CB(More info about it here
http://www.morphzone.org/modules/newbb_plus/viewtopic.php?forum=2&topic_id=5377 I remember reading some one had tryed putting more memory with no sucess, I think it was somewhere in this thread but its late here end i'm going to read it all

Gaz