Quiet and fast workstations

By: David Hess (davidwhess.delete@this.gmail.com), August 13, 2019 12:51 pm
Room: Moderated Discussions
Gian-Carlo Pascutto (gcp.delete@this.sjeng.org) on August 13, 2019 6:00 am wrote:
>
> You run into silly problems:
>
> a) Mainboards that will always peg to 100% fan if the CPU hits a certain temperature. This
> is completely pointless as modern CPUs of course just downclock if they get near thermal
> limits. I had this problem with Gigabyte mainboards. Of course this is the kind of thing
> you never find in a review, but instantly makes the mainboard useless for purpose.[/quote]

I cannot say that I have ever had that problem but for good reason. Operation of the CPU at the thermal throttling temperature is not conducive to reliable operation so I have never allowed it. If the peak temperature is above about 65C Tj, then the heat sink is not large enough.

As far as the noise from the CPU fan, unless it is a small whiny one, its noise should be insignificant even at high speed because it is naturally mechanically well isolated from the case which also shields it.

> b) Resonance issues like a certain HDD at a certain workload, or worse, the
> AIO pump at a certain workload resonating with the case. Not much to do about
> it but it takes time to track down and figure out a solution for.

I wish mechanically isolated hard drive mounts had better availability. Too many cases do not include them as a standard feature.

> c) GPU reviews tend to be completely unreliable with noise measurements. They often claim that cards are silent
> when they're in fact very loud at full load.

Even more often, they leave out temperature measurements. As above with CPUs but even more so, my experience is that GPUs which operate above 65C Tj have poor reliability.

> In the video you can see him explain that other, very logical, setups of the fans made a large
> difference in the total sound output. So you have to be willing to spend quite some time to
> experiment with this as well. I'm a bit surprised at the choice of AIO but I guess it's due
> to the very high 250W TDP of the TR. For a 105W 3900X or 3950X air might work better. But AIO
> often makes the cable and airflow handling easier That's always a tricky choice.

Baffles to direct airflow are even more effective than an excess of case fans. If you go this route, it pays to have several probe type temperature sensors to objectively measure the results of various baffle configurations. I am not sure it is possible to have too many thermocouple probes in your collection of test instruments.
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TopicPosted ByDate
EPYC SAP-SD 2-tier benchmark resultsMichael S2019/08/08 04:18 AM
  EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownMichael S2019/08/08 07:29 AM
    Wrong headline. Should be "SPECpower_ssj2008 - EPYC2 is in class of its own" (NT)Michael S2019/08/08 07:51 AM
    EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownAlberto2019/08/08 02:42 PM
      EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownblue2019/08/08 06:35 PM
      EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownMaynard Handley2019/08/08 07:58 PM
        EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownanon2019/08/09 01:00 AM
          EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownAlberto2019/08/09 02:09 AM
            EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownblue2019/08/09 07:47 AM
        EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownAlberto2019/08/09 01:12 AM
          EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownMaynard Handley2019/08/09 08:25 AM
            EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownDoug S2019/08/09 08:33 AM
              EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownanon2019/08/09 09:24 AM
            EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownAlberto2019/08/10 03:04 AM
          EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownanon.12019/08/09 04:30 PM
        EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownme2019/08/09 08:58 PM
      EPYC SAP-SD 2-tier benchmark results - EPYC2 is in class of its ownanon2019/08/08 11:47 PM
  EPYC SAP-SD 2-tier benchmark resultsLinus Torvalds2019/08/09 02:29 PM
    EPYC SAP-SD 2-tier benchmark resultsanon2019/08/10 06:20 AM
      EPYC SAP-SD 2-tier benchmark resultsme2019/08/10 06:36 AM
        EPYC SAP-SD 2-tier benchmark resultsanon2019/08/10 07:20 AM
          EPYC SAP-SD 2-tier benchmark resultsanon.12019/08/10 08:40 AM
            EPYC SAP-SD 2-tier benchmark resultsanon2019/08/10 09:38 AM
          EPYC SAP-SD 2-tier benchmark resultsblue2019/08/10 08:47 AM
        EPYC SAP-SD 2-tier benchmark resultsAdrian2019/08/10 09:43 AM
          EPYC SAP-SD 2-tier benchmark resultsme2019/08/10 10:06 AM
            EPYC SAP-SD 2-tier benchmark resultsMichael S2019/08/10 10:28 AM
    Big gotchas: poor specsjohn2019/08/10 09:54 AM
      Big gotchas: poor specsme2019/08/10 10:04 AM
      Big gotchas: poor specsanon2019/08/10 10:25 AM
        Big gotchas: poor specsLinus Torvalds2019/08/10 11:13 AM
          Big gotchas: poor specsanon2019/08/10 12:58 PM
          Big gotchas: poor caches2019/08/12 12:51 AM
            Big gotchas: poor caches2019/08/12 12:59 AM
            Big gotchas: poor cachesTravis Downs2019/08/12 08:15 AM
              parallelism vs. efficiencyhobold2019/08/13 03:43 AM
            Big gotchas: poor cachesAndy N2019/08/12 05:45 PM
              Big gotchas: poor cachesanon2019/08/12 11:43 PM
          Big gotchas: poor specsJouni Osmala2019/08/12 09:18 PM
            Big gotchas: poor specsAdrian2019/08/12 10:58 PM
              Kernel compile 25-30s, noise 25-27dBJouni Osmala2019/08/13 03:00 AM
                Quiet and fast workstationsGian-Carlo Pascutto2019/08/13 05:00 AM
                  Quiet and fast workstationsAdrian2019/08/13 06:01 AM
                  Quiet and fast workstationsDavid Hess2019/08/13 12:51 PM
                    Quiet and fast workstationsGian-Carlo Pascutto2019/08/13 11:43 PM
                      Quiet and fast workstationsMichael S2019/08/14 01:09 AM
                        Quiet and fast workstationsGian-Carlo Pascutto2019/08/14 01:59 AM
                          Quiet and fast workstationsDavid Hess2019/08/14 05:05 PM
                        Quiet and fast workstationsDavid Hess2019/08/14 04:56 PM
                      Quiet and fast workstationsDavid Hess2019/08/14 05:30 PM
                  Passively cooled threadripper/xeon WJouni Osmala2019/08/15 02:12 AM
                    Passively cooled threadripper/xeon WAdrian2019/08/15 02:47 AM
                      Passively cooled threadripper/xeon WJouni Osmala2019/08/15 04:58 AM
                        Passively cooled threadripper/xeon WAdrian2019/08/15 11:12 PM
                          Passively cooled threadripper/xeon WAdrian2019/08/15 11:21 PM
                          Passively cooled threadripper/xeon WJouni osmala2019/08/16 08:46 AM
                            Passively cooled threadripper/xeon WGroo2019/08/16 11:07 AM
                Kernel compile 25-30s, noise 25-27dBAdrian2019/08/13 05:39 AM
                Kernel compile 25-30s, noise 25-27dBLinus Torvalds2019/08/13 11:12 AM
                  which graphics card?anonymous22019/08/13 11:52 AM
                    which graphics card?Linus Torvalds2019/08/13 12:12 PM
                  Kernel compile 25-30s, noise 25-27dBDoug S2019/08/13 02:22 PM
                    Kernel compile 25-30s, noise 25-27dBDavid Hess2019/08/14 05:38 PM
                  Kernel compile 25-30s, noise 25-27dBJouni Osmala2019/08/13 11:09 PM
                    AIOsGroo2019/08/14 06:19 AM
                      AIOsGian-Carlo Pascutto2019/08/14 07:52 AM
                        AIOsGroo2019/08/14 08:49 AM
                      AIOsBrett2019/08/14 01:02 PM
                    Kernel compile 25-30s, noise 25-27dBLinus Torvalds2019/08/14 10:10 AM
                  Kernel compile 25-30s, noise 25-27dBGian-Carlo Pascutto2019/08/14 12:33 AM
                    Kernel compile 25-30s, noise 25-27dBAdrian2019/08/14 04:06 AM
                      Kernel compile 25-30s, noise 25-27dBGian-Carlo Pascutto2019/08/14 08:01 AM
                      AMD Bios, etc..Anon2019/08/14 10:39 PM
                        AMD Bios, etc..hobold2019/08/15 06:10 AM
                          AMD Bios, etc..Anon2019/08/15 03:20 PM
                        AMD Bios, etc..Jan Olšan2019/08/15 07:49 AM
                          AMD Bios, etc..Adrian2019/08/15 08:16 AM
                          AMD Bios, etc..Gro2019/08/15 09:57 AM
                        AMD Bios, etc..David Hess2019/08/16 04:39 AM
      Big gotchas: poor specsAdrian2019/08/10 12:28 PM
      Big gotchas: poor specsDummond D. Slow2019/08/10 12:57 PM
        Big gotchas: poor specsanon22019/08/10 11:33 PM
          Big gotchas: poor specsblue2019/08/10 11:57 PM
          Big gotchas: poor specsAdrian2019/08/11 04:41 AM
            Big gotchas: poor specsaaron spink2019/08/12 08:45 AM
              Big gotchas: poor specsFoo_2019/08/12 10:02 AM
              Big gotchas: poor specsTravis Downs2019/08/12 10:26 AM
                Big gotchas: poor specsGabriele Svelto2019/08/13 08:48 AM
                Big gotchas: poor specsaaron spink2019/08/13 06:23 PM
                  Big gotchas: poor specsDoug S2019/08/13 10:15 PM
                    Big gotchas: poor specsGian-Carlo Pascutto2019/08/14 12:35 AM
                    Big gotchas: poor specsaaron spink2019/08/15 04:16 PM
                      Big gotchas: poor specsJouni Osmala2019/08/15 08:03 PM
                        Big gotchas: poor specsaaron spink2019/08/19 03:05 AM
                          Big gotchas: poor specsMichael S2019/08/19 03:37 AM
                            Big gotchas: poor specsRicardo B2019/08/19 04:40 PM
                              Big gotchas: poor specsAaron Spink2019/08/25 01:29 AM
              Big gotchas: poor specsAdrian2019/08/12 10:31 AM
              Big gotchas: poor specsJukka Larja2019/08/13 06:37 AM
              Big gotchas: poor specsLinus Torvalds2019/08/13 10:31 AM
          Big gotchas: poor specsDummond D. Slow2019/08/11 05:23 AM
      FX-9590 > i7-9700KGian-Carlo Pascutto2019/08/12 09:37 AM
    RDRAND issueanonymou52019/08/10 01:52 PM
      RDRAND issueLinus Torvalds2019/08/10 03:15 PM
        RDRAND issueGionatan Danti2019/08/11 12:35 AM
          RDRAND issueLinus Torvalds2019/08/11 09:43 AM
            RDRAND issueLinus Torvalds2019/08/11 10:05 AM
              RDRAND issue@never_released2019/08/11 10:10 AM
                RDRAND issueLinus Torvalds2019/08/11 12:13 PM
                  Err....Groo2019/08/11 05:47 PM
                    Err.... This is a zero content fud posteye roll2019/08/11 07:48 PM
                    Err....Brendan2019/08/11 07:50 PM
                    Err....Jukka Larja2019/08/12 06:38 AM
                  RDRAND issueJose2019/08/12 01:33 AM
              RDRAND issueGionatan Danti2019/08/11 01:12 PM
            RDRAND issueaaron spink2019/08/12 08:18 AM
      RDRAND issuename2019/08/11 08:35 AM
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