Hypernikao

These links might be helpfull

Dell Inspiron 640m Manual - starting page 115 on memory
http://support.dell.com/support/edoc...m/YF920A01.pdf

Memory for Dell Inspiron 640m
http://www.memorystock.com/memory/DellInspiron640m.html
http://www.memoryc.com/computermemor...c25300kit.html
http://www.laptopmemoryupgrade.com/m...40mMemory.html
http://www.dellmemoryram.com/dell-la...piron640m.html

Has anybody succeeded in upgrading the 640m to 4GB?

¡Hypernikao!