Quote from hajj_3 on August 30, 2011, 22:48
1ghz/512mb ram would be very nice indeed. 16GB nand flash is really cheap now ($2.68) i think, this would be loads of storage and would have incredibly fast access and sustained transfer speeds.
Your looking at module pricing, not chip pricing. Once you break that 16GB flash down into 8 2GB modules...further broken down into 256MB chips, and your right back to 256MB of memory.
I don't know how the memory controller on the processor works, but if it will only connect to 1 chip[very likely], then your choice is limited to 1 chip - no matter what the pricing is.
To attach multiple chips, you need to then have a memory controller between the processor and the memory chips to route the requests to the right range. This absolutely kills space as now you can't mount the memory on top of the processor, but you have to mount a DMA chip and every memory chip you wish to use on the board.
As far as I can tell, the other choice is to setup a connection, like a SODIMM slot where any notebook memory could be plugged. Sounds really nice and convenient...but then you have to attach the plastic connector to the board..it has to be really sturdy to remove/swap dimm's, etc.
Considering how few dev boards include memory dimm connections of any sort...and the ones that I have seen that do tend to cost 100$ more than their counterparts[and are lower performing] - I'd guess that it is quite expensive.