--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Mon, May 8, 2017 at 2:07 AM, doark@mail.com wrote:
normally a DIMM would have 8 or 16 RAM ICs, meaning that for a 4GB DIMM you need 8x 512mb ICs, or you could do 8GB by using 16 of them.
But that would mean that an 8GiB stick for a desktop would cost $80 just for the ICs. I can find 8GiB of RAM for $60 and cheaper, I bet, if I poked my nose around.
mass-volume pricing (1m units and above) is radically different from low to mid-volume pricing (1-10k).
Or maybe desktops don't need ICs???
desktops take DIMMs, not individual ICs.
normally you get 2 (matched) DIMMS totalling 8GB.
if you want *32* GB you get 2 matched DIMMs, but nobody in "mass-production" is shipping windows PCs or laptops with 32GB of RAM (and if they are it's DDR4)
You write that as though being dismissive of DDR4.
where did you get that impression?
Why is DDR4 currently unacceptable for one of your designs?
where did you get the impression that i used any words which imply "unacceptability"?
no it's much simpler than you imagined: there simply aren't any ***ACCESSIBLE*** SoCs which have DDR4... yet. "accessible" is defined according to the selection criteria listed here:
https://www.crowdsupply.com/eoma68/micro-desktop/updates/picking-a-processor
Hmm, maybe you should invent an OpenSource IC?
that's what the libre-riscv initiative is about.
l.