After a thorough teardown of the 3DS and its components, Chipworks was able to figure out how much RAM the 3DS has. X-raying the chip in question, the Fujitsu MB82M8080-07L, led to a special model code being discovered inside the die. From the number Chipworks was able to conclude that the 3DS comes with 128 MB of RAM. The speed of the chip is claimed by Fujitsu to be 3.2 GB/s, which is about double that of DDR2’s capability.
Now, wouldn’t it be easier if Nintendo just mentioned that, without having to all X-ray on the thing? That’s Nintendo: making things difficult since Battletoads.