Doug S (foo.delete@this.bar.bar) on July 24, 2018 3:32 pm wrote:
> Michael S (already5chosen.delete@this.yahoo.com) on July 24, 2018 3:16 pm wrote:
> > Doug S (foo.delete@this.bar.bar) on July 24, 2018 8:49 am wrote:
> > > David Kanter (dkanter.delete@this.realworldtech.com) on July 24, 2018 6:49 am wrote:
> > > > Emil Briggs (me.delete@this.nowherespam.com) on July 24, 2018 6:30 am wrote:
> > > > > If I recall correctly Micron launched a product that consisted of DDR4 dimms with a super cap and flash.
> > > > > When power goes down the DRAM contents are written to the flash but otherwise it acts as a normal DIMM.
> > > > >
> > > >
> > > > Yup, and it's about 16GB!
> > >
> > >
> > > Sounds like a great idea, too bad I'll bet it costs at least 10x a normal 16GB DIMM!
> >
> > They are relatively inexpensive on eBay. Less than 1.5x over normal 16 GB registered DDR4 DIMMs.
> > The price is likely higher when bought through "normal" channels,
> > but still 10x or even 5x sounds completely unrealistic.
>
>
> Why does it sound unrealistic?

Because it is a solution looking for problem.
And the BOM is pretty low. May be, not exactly 1.3x as in eBAy price case, but probably way less than 2x.

> Low volume specialty items always have a huge premium. Same
> reason ECC DIMMs cost much more than the 12.5% premium one would expect, or why SAS drives
> cost so much more than SATA drives that were identical except for the interface, etc.

Those are things that customers want and know why they want them. Quite different from NVDIMM-N.

Now, if a year or two from now there will be customers that bought 3DXP DIMMs and found out that they are very useful in principle, but too slow, then. may be, these customers will start to look for NVDIMM-N and will be willing to pay the premium. Of course, they probably would want something bigger than 16 GB.