This is something I'm actually doing already (waiting for parts and PCBs). I'm using 2x 4bit 2Mbyte chips per module (much like most 4MB modules I see) and no parity chip (but there's a spot for it).

2 layers will work fine when the power traces are fat and wide and all decoupling caps are where they should.

Tiido wrote:

This is something I'm actually doing already (waiting for parts and PCBs). I'm using 2x 4bit 2Mbyte chips per module (much like […]
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This is something I'm actually doing already (waiting for parts and PCBs). I'm using 2x 4bit 2Mbyte chips per module (much like most 4MB modules I see) and no parity chip (but there's a spot for it).

2 layers will work fine when the power traces are fat and wide and all decoupling caps are where they should.

Nice. Are you planning on selling those, or releasing the gerbers? I just started tinkering on EAGLE a few hours ago and my routing is currently a horrible mess, but having seen yours, is probably going to become uncomfortably similar.

There's only so many ways you can wire functionally same thing using same parts in same footprint 🤣.
I do have plans to sell these, there should be 50+ sticks available by end of month.

those 4mb simms look so sweet - I actually got some by chance last week , never owned any in all the years I'm messing with old stuff

Will there be a 16MByte variant also?