Ok. Did some search. The result 64MB could be possible !!!
What about Samsung?
See
here for overview.
Here for more precise overview:
We need the K4S643232H-TC70:
This one is still produced and pin compatible.
My problem is: I have no idea where to buy it. I am in germany and did not find any reseller
The big ones have it on stock but i only need one and not 1000.
wengi