Multi-level DRAM?

By: Michael S (already5chosen.delete@this.yahoo.com), December 26, 2020 8:11 am
Room: Moderated Discussions
Paul (pavel.delete@this.noa-labs.com) on December 26, 2020 4:04 am wrote:
> Björn Ragnar Björnsson (bjorn.ragnar.delete@this.gmail.com) on December 25, 2020 6:44 pm wrote:
> > Paul (pavel.delete@this.noa-labs.com) on December 23, 2020 1:00 pm wrote:
> > > Dan Fay (daniel.fay.delete@this.gmail.com) on December 23, 2020 12:29 pm wrote:
> > > >
> > > > > TLC DRAM was already done a few times, but Xingmem is the only one that ever saw any commercial success.
> > > >
> > > > Interesting, though they don't seem to be competitive with
> > > > regular DRAM -- the largest part they sell is 144Mbit.
> > >
> > > Yet, even half the size would be a knockdown punch in SRAM market.
> > >
> > > Another interesting thing which was said by somebody close to the company was that
> > > you can you can use even a prehistoric memory process, but still get quite competitive
> > > performance even from most marginal dies because of strong error correction.
> > >
> > > It's not a big secret too that ECC memory DIMMs from big memory
> > > brands often come with more derated dies than non-ECC DIMMs.
> >
> > Tell me more. You're suggesting that DRAM companies are selling inferior chips to the buyers
> > that are most conscientious about reliability and error resiliency? Inferior chips at a
> > premium price compared to better binned chips? Not saying your wrong, your conjecture would
> > certainly explain why we can't get ECC DIMMs at optimal frequency & latency.
> >
> > Forgive me, but I cringe at the thought. Double cringe if it's true.
>
> Yes, exactly. This is happening since everybody knows that ECC memory with lower bins will work, and not
> lead to returns, unlike consumer ones. In general, you get much bigger variance of chips on ECC DIMMs.
>
> A notebook that consistently crashes few times a day will be eventually returned, but a server that showers
> ECC errors, but works would not. Even such memory will likely never hit a double fault in its service life.

That could work for Samsung, Hynix or Micron/Crucial ECC DIMMs. But how it's going to work for other DIMM manufactorers? Can they really order cheaper less reliable devices from one of triopolists? Or do you say that they order, for example, DDR4-2666 and put it DDR4-3200 ECC RDIMM?
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TopicPosted ByDate
In-band ECC support in recent Atom SoCsGabriele Svelto2020/12/15 03:24 PM
  In-band ECC support in recent Atom SoCsanon2020/12/15 05:40 PM
  In-band ECC support in recent Atom SoCsanon32020/12/15 07:07 PM
  In-band ECC support in recent Atom SoCsEtienne Lorrain2020/12/16 01:48 AM
    In-band ECC support in recent Atom SoCsAdrian2020/12/16 07:43 AM
      ECC in SoCsKonrad Schwarz2020/12/17 07:37 AM
        ECC in SoCsAdrian2020/12/17 08:43 AM
          ECC in SoCsMichael S2020/12/17 12:06 PM
  In-band ECC support in recent Atom SoCs & Tiger Lake UAdrian2020/12/16 07:31 AM
    In-band ECC support in recent Atom SoCs & Tiger Lake UJS2020/12/16 09:07 PM
      In-band ECC support in recent Atom SoCs & Tiger Lake UGabriele Svelto2020/12/16 10:00 PM
        In-band ECC support in recent Atom SoCs & Tiger Lake UJS2020/12/17 12:39 AM
          In-band ECC support in recent Atom SoCs & Tiger Lake UEtienne Lorrain2020/12/17 02:15 AM
            In-band ECC support in recent Atom SoCs & Tiger Lake UJames2020/12/17 07:28 AM
              In-band ECC support in recent Atom SoCs & Tiger Lake UEtienne Lorrain2020/12/17 09:16 AM
                In-band ECC support in recent Atom SoCs & Tiger Lake Urwessel2020/12/17 09:51 AM
                  In-band ECC support in recent Atom SoCs & Tiger Lake UMichael S2020/12/17 12:22 PM
    Enough with the idiocy ... let's have proper ECC again.Björn Ragnar Björnsson2020/12/16 10:09 PM
      Enough with the idiocy ... let's have proper ECC again.Maxwell2020/12/17 12:58 AM
        Enough with the idiocy ... let's have proper ECC again.pixiespeed2020/12/17 09:04 AM
      Enough with the idiocy ... let's have proper ECC again.Adrian2020/12/17 07:40 AM
      Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/17 09:09 AM
        Enough with the idiocy ... let's have proper ECC again.Etienne Lorrain2020/12/17 09:26 AM
          Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/17 09:42 AM
            Enough with the idiocy ... let's have proper ECC again.David Kanter2020/12/17 12:04 PM
              Enough with the idiocy ... let's have proper ECC again.Doug S2020/12/17 01:03 PM
              Enough with the idiocy ... let's have proper ECC again.phonon2020/12/17 03:25 PM
                Internal array ECC vs. memory controllerDavid Kanter2020/12/19 10:39 AM
                  Internal array ECC vs. memory controllerJörn Engel2020/12/20 10:42 AM
                    Internal array ECC vs. memory controllerrwessel2020/12/20 10:52 AM
                    Internal array ECC vs. memory controllerDavid Kanter2020/12/20 03:44 PM
              Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/17 04:55 PM
                Enough with the idiocy ... let's have proper ECC again.rwessel2020/12/17 07:34 PM
                  Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/17 09:10 PM
                    Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/17 09:43 PM
                      Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/18 09:30 AM
                        Enough with the idiocy ... let's have proper ECC again.anon22020/12/19 01:00 AM
                          Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/19 10:23 AM
                            Enough with the idiocy ... let's have proper ECC again.anon22020/12/19 03:01 PM
                              Enough with the idiocy ... let's have proper ECC again.Maynard Handley2020/12/19 04:23 PM
                                Enough with the idiocy ... let's have proper ECC again.anon22020/12/19 04:30 PM
              Enough with the idiocy ... let's have proper ECC again.Björn Ragnar Björnsson2020/12/17 07:41 PM
                Enough with the idiocy ... let's have proper ECC again.David Hess2020/12/19 08:48 PM
              Enough with the idiocy ... let's have proper ECC again.Memory Guy2020/12/17 09:19 PM
      Enough with the idiocy ... let's have proper ECC again.rwessel2020/12/17 10:01 AM
      Enough with the idiocy ... let's have proper ECC again.Wes Felter2020/12/18 09:38 PM
        Thanks for the confirmation!David Kanter2020/12/19 11:51 AM
          Thanks for the confirmation!Konrad Schwarz2020/12/20 09:34 AM
            Thanks for the confirmation!Niels Jørgen Kruse2020/12/20 11:01 AM
              Thanks for the confirmation!David Kanter2020/12/20 03:45 PM
              Thanks for the confirmation!Gionatan Danti2020/12/21 12:50 AM
                Thanks for the confirmation!Niels Jørgen Kruse2020/12/21 09:07 AM
            Thanks for the confirmation!David Kanter2020/12/20 03:42 PM
              Thanks for the confirmation!Foo_2020/12/21 02:01 AM
                Thanks for the confirmation!David Kanter2020/12/21 08:39 AM
            Thanks for the confirmation!Paul2020/12/20 11:29 PM
              Thanks for the confirmation!Michael S2020/12/21 01:00 AM
                Thanks for the confirmation!anon20202020/12/21 01:44 AM
                Thanks for the confirmation!Paul2020/12/22 12:42 PM
                  Thanks for the confirmation!Michael S2020/12/22 02:28 PM
                    Thanks for the confirmation!Paul2020/12/22 06:12 PM
                      Thanks for the confirmation!Michael S2020/12/23 02:55 PM
                        Thanks for the confirmation!Paul2020/12/23 03:54 PM
                          Thanks for the confirmation!Dan Fay2020/12/23 04:38 PM
                            Thanks for the confirmation!Paul2020/12/26 04:10 AM
                              Thanks for the confirmation!Björn Ragnar Björnsson2020/12/26 08:37 PM
                                Thanks for the confirmation!anon22020/12/27 02:00 AM
                                Thanks for the confirmation!Doug S2020/12/28 12:47 PM
            Thanks for the confirmation!David Hess2020/12/21 06:35 PM
              Thanks for the confirmation!Konrad Schwarz2020/12/22 12:08 AM
                Thanks for the confirmation!Doug S2020/12/22 10:42 AM
                  Thanks for the confirmation!David Hess2020/12/22 12:32 PM
                Thanks for the confirmation!David Hess2020/12/22 12:21 PM
        Enough with the idiocy ... let's have proper ECC again.Björn Ragnar Björnsson2020/12/19 04:25 PM
          Enough with the idiocy ... let's have proper ECC again.Brett2020/12/19 08:13 PM
            Enough with the idiocy ... let's have proper ECC again.David Hess2020/12/19 09:17 PM
              Enough with the idiocy ... let's have proper ECC again.Konrad Schwarz2020/12/21 03:29 AM
                Enough with the idiocy ... let's have proper ECC again.David Hess2020/12/21 06:49 PM
            Enough with the idiocy ... let's have proper ECC again.Björn Ragnar Björnsson2020/12/19 09:57 PM
              Enough with the idiocy ... let's have proper ECC again.Björn Ragnar Björnsson2020/12/19 10:14 PM
            Enough with the idiocy ... let's have proper ECC again.Adrian2020/12/20 02:06 AM
              Enough with the idiocy ... let's have proper ECC again.rwessel2020/12/20 08:43 AM
             Multi-level DRAM?Brett2020/12/20 08:07 PM
               Multi-level DRAM?Heikki Kultala2020/12/21 11:58 AM
               Multi-level DRAM?David Hess2020/12/21 07:25 PM
                 Multi-level DRAM?Adrian2020/12/22 05:15 AM
                   Multi-level DRAM?Dan Fay2020/12/22 10:11 AM
                     Multi-level DRAM?Paul2020/12/22 06:01 PM
                       Multi-level DRAM?Dan Fay2020/12/23 12:29 PM
                         Multi-level DRAM?Paul2020/12/23 01:00 PM
                           Multi-level DRAM?Dan Fay2020/12/23 04:30 PM
                             Multi-level DRAM?David Hess2020/12/23 05:05 PM
                           Multi-level DRAM?Björn Ragnar Björnsson2020/12/25 06:44 PM
                             Multi-level DRAM?Paul2020/12/26 04:04 AM
                               Multi-level DRAM?Michael S2020/12/26 08:11 AM
                                 DIMM binsPaul2020/12/26 08:55 AM
                                   DIMM binsBjörn Ragnar Björnsson2020/12/26 08:09 PM
                                     DIMM binsBjörn Ragnar Björnsson2020/12/26 08:19 PM
                                       DIMM binsDaniel Fay2020/12/27 07:51 PM
                                  Is binning at the module or die level? (NT)anonymous22020/12/27 02:36 PM
                                    Is binning at the module or die level?David Hess2020/12/28 01:31 PM
                               Multi-level DRAM?Doug S2020/12/28 12:55 PM
                               Multi-level DRAM?David Hess2020/12/28 01:36 PM
                             Multi-level DRAM?anon­­32020/12/26 10:22 PM
                               Multi-level DRAM?Björn Ragnar Björnsson2020/12/27 07:12 PM
                               Multi-level DRAM?Paul2021/01/04 04:20 AM
               Multi-level DRAM?Carson2021/01/05 12:14 PM
                 Multi-level DRAM?Brett2021/01/05 02:05 PM
        Enough with the idiocy ... let's have proper ECC again.Björn Ragnar Björnsson2020/12/19 04:35 PM
        Enough with the idiocy ... let's have proper ECC again.David Hess2020/12/19 08:59 PM
          Enough with the idiocy ... let's have proper ECC again.rwessel2020/12/20 08:56 AM
          Enough with the idiocy ... let's have proper ECC again.Doug S2020/12/20 10:16 AM
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