#A3000
You can also use 1M X 4's
(p. 4-17 of the 'Introducing the Amiga 3000' manual.
"The standard A3000 is shipped with 1 megabyte of Fast RAM. (Other models
may provide more RAM.) The organization of the RAM chips is 256K X 4. A
total of 32 RAM chips can be installed in the Fast RAM section. Using 256K
X 4 DRAMS, this results in a total of 4 megabytes of Fast RAM. The A3000
also supports the use of DRAMS organized as 1 megabit X 4 (1M X 4). If all
32 of the RAM locations are populated with 1M X 4 DRAMS, the total amount
of Fast RAM is 16 megabytes."
(p, 4-14 of the 'Introducing the Amiga 3000' manual.
This means that my A3000 (now populated with 8 meg FAST/2 meg CHIP) can
have a toal of 18 meg ram on the motherboard, as I still have 16 free
sockets for DRAMs.
Is this contrary to your understanding?