Alder Lake, not bad, but not as good as expected

By: Adrian (a.delete@this.acm.org), November 4, 2021 6:56 am
Room: Moderated Discussions

The embargo has expired, so the reviews have become public.

For example:

https://www.guru3d.com/articles-pages/core-i9-12900k-review,1.html


https://www.phoronix.com/scan.php?page=article&item=intel-12600k-12900k&num=1


It was expected that Alder Lake will be much faster in single thread in all cases.

In most cases it is faster in single thread. Sometimes the advantage is around 20%, as expected, but there are also many cases when the advantage over Zen 3 is much less.

More weird is that in single-thread Cinebench, when run at the same fixed frequency, it has exactly the same speed as Zen 3, even if that is much faster than Rocket Lake. So it looks like in many cases the advantage in single-thread is determined more by the high clock frequencies and the much faster DDR5 memory, than by the improvements in IPC, as expected.


For multi-threaded applications, unfortunately for Intel, even the new improved Intel 7 manufacturing process remains much behind in energy efficiency compared to the TSMC 7 nm process.

Ader Lake with 24 threads can be considered as having equivalent performance with Zen 3 with 24 threads.

In some multi-threaded benchmarks Zen 3 is faster, in some others Alder Lake is faster and in a few benchmarks Alder Lake succeeds to match even the more expensive Ryzen 9 5950X.

Nevertheless this MT performance is obtained only at 50% higher power consumption (240 W over idle for Alder Lake vs. 160 W over idle for Zen 3). Moreover, you need a very good cooler, like for Threadripper, to obtain such results.

So the energy efficiency of Alder Lake, even with 1/3 of the threads on Gracemont cores, is only 2/3 of the energy efficiency for Zen 3 using TSMC 7 nm, which is pathetic.

I assume that this low energy efficiency is caused by Intel being desperate to match the performance of desktop Zen 3 and running Alder Lake at too high clock frequencies.

It is likely that at lower clock frequencies, as in laptops, Alder Lake will be much more efficient energetically, but it remains to be seen whether it will be able to match CPUs using the TSMC process.

This does not look good for Sapphire Rapids, but again, maybe at the lower clock frequencies from servers, the Golden Cove cores will be more efficient than what is seen in desktop Alder Lake.


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TopicPosted ByDate
Alder Lake, not bad, but not as good as expectedAdrian2021/11/04 06:56 AM
  Expected?Anon2021/11/04 07:30 AM
    Expected?2021/11/04 08:14 AM
      Expected?Gian-Carlo Pascutto2021/11/04 03:53 PM
  AVX512 is NOT fused off.Robert Williams2021/11/04 08:24 AM
    AVX512 is NOT fused off.Adrian2021/11/04 09:12 AM
      AVX512 is NOT fused off.me2021/11/05 02:46 AM
      AVX512 is NOT fused off.Kevin G2021/11/05 10:17 AM
        AVX512 is NOT fused off.me2021/11/05 11:21 AM
          AVX512 is NOT fused off.James2021/11/08 03:05 AM
            AVX512 is NOT fused off.Andrey2021/11/08 04:39 AM
            "With the Atom cores enabled" is the key part [nt]me2021/11/08 04:51 AM
              "With the Atom cores enabled" is the key partanonymous22021/11/08 05:47 PM
                "With the Atom cores enabled" is the key partme2021/11/08 06:14 PM
                "With the Atom cores enabled" is the key partFoo_2021/11/09 05:24 AM
    AVX512 is NOT fused off.David Hess2021/11/04 09:13 AM
      AVX512 is completely disabledAndrey2022/01/01 04:40 AM
        AVX512 is completely disabledJukka Larja2022/01/01 10:02 AM
          AVX512 is completely disabledAndrey2022/01/01 12:37 PM
            AVX512 is completely disabledJukka Larja2022/01/01 09:50 PM
              AVX512 is completely disabledAndrey2022/01/02 07:02 AM
                AVX512 is completely disabledJukka Larja2022/01/02 10:48 AM
                  AVX512 is completely disabledAndrey2022/01/02 12:16 PM
                    AVX512 is completely disabledJukka Larja2022/01/03 01:49 AM
                      AVX512 is completely disabledme2022/01/03 01:36 PM
                        AVX512 is completely disabledBrendan2022/01/03 07:10 PM
                          AVX512 is completely disabledDavid Hess2022/01/08 12:54 PM
                            AVX512 is completely disabledme2022/01/08 04:25 PM
                        AVX512 is completely disabledJukka Larja2022/01/04 02:34 AM
                      AVX512 is completely disabledAndrey2022/01/03 03:48 PM
                        AVX512 is completely disabledJukka Larja2022/01/04 02:17 AM
                          AVX512 is completely disabledAndrey2022/01/04 03:27 AM
                            AVX512 is completely disabledBrendan2022/01/04 11:26 AM
                              AVX512 is completely disabledhobold2022/01/04 02:26 PM
                                A word on video encodingAndrey2022/01/04 03:16 PM
                              A word on video encodingAndrey2022/01/04 03:05 PM
                            AVX512 is completely disabledJukka Larja2022/01/05 12:35 AM
                              A word on video encodingAndrey2022/01/05 01:42 AM
                                A word on video encodingAndrey2022/01/05 01:50 AM
                                A word on video encodingJukka Larja2022/01/05 06:43 AM
                                A word on video encodingDummond D. Slow2022/01/05 06:42 PM
                                  A word on video encodingDummond D. Slow2022/01/05 06:44 PM
                                  A word on video encodingAndrey2022/01/06 03:14 PM
                          AVX512 is completely disabledAnne O. Nymous2022/01/04 04:07 AM
                            AVX512 is completely disabledEtienne Lorrain2022/01/05 02:26 AM
                              AVX512 is completely disabledAnne O. Nymous2022/01/05 03:57 AM
                                AVX512 is completely disabledSimon Farnsworth2022/01/05 07:12 AM
                                  AVX512 is completely disabled---2022/01/05 01:14 PM
                                    AVX512 is completely disabledSimon Farnsworth2022/01/07 03:50 AM
                                      AVX512 is completely disabled---2022/01/07 12:52 PM
                                        AVX512 is completely disabledSimon Farnsworth2022/01/07 02:41 PM
                                  AVX512 is completely disabledAndrey2022/01/05 02:23 PM
                                AVX512 is completely disabled---2022/01/05 01:08 PM
                                  AVX512 is completely disabledAnne O. Nymous2022/01/06 06:38 AM
                                  AVX512 is completely disabledSimon Farnsworth2022/01/07 06:38 AM
                                    AVX512 is completely disabled---2022/01/07 01:49 PM
                                      AVX512 is completely disabledSimon Farnsworth2022/01/07 02:41 PM
                                        AVX512 is completely disabledDoug S2022/01/08 11:43 AM
                                          AVX512 is completely disabledSimon Farnsworth2022/01/10 05:28 AM
                                            AVX512 is completely disabledDoug S2022/01/10 10:50 AM
                                              AVX512 is completely disabledSimon Farnsworth2022/01/11 03:58 AM
                                            AVX512 is completely disabledAndrey2022/01/10 11:09 AM
                                              AVX512 is completely disabledSimon Farnsworth2022/01/11 04:07 AM
                                              AVX512 is completely disabledNoSpammer2022/01/12 05:20 AM
                                        AVX512 is completely disabled---2022/01/11 01:00 AM
                                          AVX512 is completely disabledSimon Farnsworth2022/01/11 03:54 AM
                                            AVX512 is completely disabled---2022/01/11 10:19 AM
                                              AVX512 is completely disabledSimon Farnsworth2022/01/12 03:25 AM
                                          AVX512 is completely disabledDoug S2022/01/11 09:42 AM
                                            AVX512 is completely disabled---2022/01/11 10:30 AM
                                              Yes. (I have not read The Innovator's Dilemma.) (NT)Paul A. Clayton2022/01/11 02:27 PM
                                                Yes. (I have not read The Innovator's Dilemma.)---2022/01/11 04:54 PM
                                                  Yes. (I have not read The Innovator's Dilemma.)Jukka Larja2022/01/12 06:48 AM
                                                me tooMichael S2022/01/14 04:47 AM
                      AVX512 is completely disabledDavid Hess2022/01/08 12:52 PM
                        AVX512 is completely disabledJukka Larja2022/01/09 12:53 AM
                          CPU UpgradesDavid Hess2022/01/09 11:24 AM
                AVX512 is completely disabledAdrian2022/01/03 04:34 AM
          then Intel can as well discontinue ithobold2022/01/01 01:21 PM
            More like a (big) bump in the roadChester2022/01/01 06:23 PM
              More like a big(!) bump in the roadhobold2022/01/02 01:43 AM
                More like a big(!) bump in the roadJukka Larja2022/01/02 02:51 AM
                  More like a big(!) bump in the roadhobold2022/01/02 06:05 AM
                    More like a big(!) bump in the roadJukka Larja2022/01/02 09:35 AM
                      More like a big(!) bump in the road-.-2022/01/02 05:30 PM
                        More like a big(!) bump in the roadme2022/01/02 05:55 PM
                          More like a big(!) bump in the road-.-2022/01/02 09:24 PM
                            More like a big(!) bump in the roadJukka Larja2022/01/03 01:53 AM
                              More like a big(!) bump in the road-.-2022/01/03 04:14 AM
                                More like a big(!) bump in the roadJukka Larja2022/01/03 05:41 AM
                                  More like a big(!) bump in the road-.-2022/01/03 07:21 PM
                                    More like a big(!) bump in the roadJukka Larja2022/01/03 09:22 PM
                                      More like a big(!) bump in the road-.-2022/01/04 03:41 AM
                                        More like a big(!) bump in the roadJukka Larja2022/01/04 12:03 PM
                                          More like a big(!) bump in the roadme2022/01/05 11:14 AM
                                            More like a big(!) bump in the roadJukka Larja2022/01/06 12:00 AM
                                              More like a big(!) bump in the roadme2022/01/06 06:50 AM
                                                More like a big(!) bump in the roadJukka Larja2022/01/06 08:16 AM
                                                  More like a big(!) bump in the roadme2022/01/06 08:26 AM
                                                  More like a big(!) bump in the roadAndrey2022/01/06 03:27 PM
                            More like a big(!) bump in the roadme2022/01/03 07:27 AM
                              More like a big(!) bump in the road-.-2022/01/03 07:28 PM
            then Intel can as well discontinue itJukka Larja2022/01/01 09:25 PM
            then Intel can as well discontinue itAnon2022/01/02 04:55 AM
              Intel should replace AVX512Doug S2022/01/02 08:53 AM
                Intel should replace AVX512None2022/01/02 09:49 AM
                  Intel should replace AVX512dmcq2022/01/02 10:42 AM
                    Intel should replace AVX512None2022/01/02 11:05 AM
                      Intel should replace AVX512dmcq2022/01/02 05:25 PM
                        Intel should replace AVX512None2022/01/03 12:53 AM
                          Intel should replace AVX512Michael S2022/01/03 07:02 AM
                  Intel should replace AVX512Jörn Engel2022/01/03 10:24 AM
                    Intel should replace AVX512-.-2022/01/03 07:35 PM
                    Intel should replace AVX512None2022/01/04 01:58 AM
                SVE solves the wrong problemhobold2022/01/02 05:17 PM
                  SVE solves the wrong problemdmcq2022/01/02 05:42 PM
                    SVE solves the wrong problemDoug S2022/01/03 10:30 AM
                      SVE solves the wrong problemFoo_2022/01/03 03:13 PM
                        So many bullshit...Anon2022/01/03 05:02 PM
                          And Apple...Anon2022/01/03 05:09 PM
                          So many bullshit...-.-2022/01/03 07:42 PM
                            So many bullshit...Anon2022/01/04 02:40 AM
                              So many bullshit...-.-2022/01/04 04:30 AM
                                So many bullshit...^_^2022/01/05 07:07 AM
                              So many bullshit...rwessel2022/01/04 09:29 AM
                                So many bullshit...Anon2022/01/04 10:08 AM
                        SVE solves the wrong problemDoug S2022/01/03 09:38 PM
                          SVE solves the wrong problem-.-2022/01/04 04:27 AM
                        SVE solves the wrong problemCarson2022/01/04 01:12 AM
                          SVE solves the wrong problemChester2022/01/04 02:08 AM
                            SVE solves the wrong problemDoug S2022/01/04 11:06 AM
                              SVE solves the wrong problemdmcq2022/01/04 11:56 AM
                              SVE solves the wrong problemChester2022/01/04 02:19 PM
                                SVE solves the wrong problemhobold2022/01/04 02:52 PM
                                  SVE solves the wrong problemJukka Larja2022/01/05 12:16 AM
                              SVE solves the wrong problem-.-2022/01/04 03:55 PM
                                SVE solves the wrong problemDoug S2022/01/04 09:51 PM
                                  SVE solves the wrong problemJörn Engel2022/01/04 11:06 PM
                                    SVE solves the wrong problemDoug S2022/01/05 12:48 PM
                                      SVE solves the wrong problemJörn Engel2022/01/05 07:01 PM
                                        SVE solves the wrong problemdmcq2022/01/06 03:32 AM
                                  SVE solves the wrong problem-.-2022/01/05 05:30 AM
                              SVE solves the wrong problempeceed2022/01/16 06:12 AM
                          SVE solves the wrong problemFoo_2022/01/04 02:10 AM
                            SVE solves the wrong problemDoug S2022/01/04 11:16 AM
                          SVE solves the wrong problemdmcq2022/01/04 02:53 AM
                            SVE solves the wrong problemnone2022/01/04 05:58 AM
                              SVE solves the wrong problemBrendan2022/01/04 01:36 PM
                                SVE solves the wrong problemAnon2022/01/05 12:32 AM
                                  SVE solves the wrong problemBrendan2022/01/05 02:28 AM
                                    SVE solves the wrong problemnone2022/01/05 03:50 AM
                                      SVE solves the wrong problemdmcq2022/01/05 06:07 AM
                                      SVE solves the wrong problemBrendan2022/01/05 08:38 AM
                                        SVE solves the wrong problemnone2022/01/05 09:24 AM
                                          SVE solves the wrong problemBrendan2022/01/05 05:43 PM
                                          SVE solves the wrong problemRomain Dolbeau2022/01/14 03:11 AM
                                            SVE solves the wrong problemnone2022/01/14 04:17 AM
                                              SVE solves the wrong problemdmcq2022/01/14 06:26 AM
                                              SVE solves the wrong problemRomain Dolbeau2022/01/15 12:51 AM
                                SVE solves the wrong problem---2022/01/05 01:55 PM
                                  An example, please...Anon2022/01/05 02:19 PM
                                    An example, please...---2022/01/05 03:12 PM
                                      An example, please...dmcq2022/01/05 03:45 PM
                                        An example, please...Freddie2022/01/05 04:46 PM
                                          An example, please...dmcq2022/01/05 05:09 PM
                                            An example, please...Freddie2022/01/05 08:24 PM
                                              An example, please...dmcq2022/01/06 03:20 AM
                                      An example, please...Anon2022/01/06 12:52 AM
                                        An example, please...---2022/01/06 11:56 AM
                                          An example, please...Simon Farnsworth2022/01/07 06:46 AM
                                            An example, please...Doug S2022/01/07 10:08 AM
                                            An example, please...-.-2022/01/07 05:24 PM
                                              An example, please...Doug S2022/01/08 11:59 AM
                                                An example, please...-.-2022/01/08 05:26 PM
                                                  An example, please...Simon Farnsworth2022/01/10 04:33 AM
                                                An example, please...Freddie2022/01/10 09:16 AM
                                                  An example, please...Anon2022/01/10 02:20 PM
                                      An example, please...dmcq2022/01/06 04:04 PM
                      SVE solves the wrong problemhobold2022/01/03 03:37 PM
                    SVE solves the wrong problemhobold2022/01/03 03:40 PM
                      SVE solves the wrong problemDoug S2022/01/03 09:43 PM
                        SVE solves the wrong problemhobold2022/01/04 06:25 AM
                          SVE solves the wrong problemdmcq2022/01/04 10:12 AM
                            SVE solves the wrong problemhobold2022/01/04 02:41 PM
                          SVE solves the wrong problemJörn Engel2022/01/04 11:27 PM
                            SVE solves the wrong problemhobold2022/01/05 01:30 AM
        AVX256 to be disabled as well on the i9 12900k ?Hans de Vries2022/01/02 10:31 PM
    AVX512 is NOT fused off.sr2021/11/07 04:35 AM
      AVX512 is NOT fused off.gai2021/11/07 06:16 AM
        AVX512 is NOT fused off.Adrian2021/11/07 07:26 AM
          AVX512 is NOT fused off.anonymou52021/11/07 08:02 AM
      Alder Lake floorplanPaul A. Clayton2021/11/12 07:20 AM
        Alder Lake floorplanDoug S2021/11/12 12:55 PM
          I only noted the 2x1 dimensions (NT)Paul A. Clayton2021/11/13 06:36 AM
  Alder Lake, not bad, but not as good as expectedJukka Larja2021/11/04 08:33 AM
    Alder Lake, not bad, but not as good as expectedAdrian2021/11/04 09:21 AM
      Alder Lake, not bad, but not as good as expectedJukka Larja2021/11/04 10:16 AM
    Compilation DDR4 vs DDR5Gian-Carlo Pascutto2021/11/04 03:49 PM
      Compilation DDR4 vs DDR5Gian-Carlo Pascutto2021/11/05 04:33 AM
        Compilation DDR4 vs DDR5Jukka Larja2021/11/05 09:13 PM
          Compilation DDR4 vs DDR5Jouni Matti Juhani Osmala2021/11/05 09:37 PM
            Compilation DDR4 vs DDR5Jukka Larja2021/11/06 12:23 AM
            Compilation DDR4 vs DDR5Andrei F2021/11/06 05:32 AM
              Compilation DDR4 vs DDR5Adrian2021/11/06 07:24 AM
                Compilation DDR4 vs DDR5Jouni Matti Juhani Osmala2021/11/06 08:19 AM
            DDR4-3200 CL22Gian-Carlo Pascutto2021/11/07 03:22 AM
              DDR4-3200 CL22me2021/11/07 04:32 AM
                DDR4-3200 CL222021/11/07 12:58 PM
                  DDR4-3200 CL22me2021/11/07 02:25 PM
                  DDR4-3200 CL22JEDEC2021/11/07 02:36 PM
                    DDR4-3200 CL222021/11/07 08:37 PM
                  DDR4-3200 CL22Andrey2021/11/07 03:04 PM
                    DDR4-3200 CL222021/11/07 08:37 PM
                      DDR4-3200 CL22Andrey2021/11/08 04:58 AM
                DDR4-3200 CL22Gian-Carlo Pascutto2021/11/08 06:01 AM
                  DDR4-3200 CL22Jukka Larja2021/11/08 08:19 AM
                    DDR4-3200 CL22Gian-Carlo Pascutto2021/11/08 02:10 PM
    Alder Lake, e-cores not good for TPC-CPer Hesselgren2021/11/06 04:07 AM
      MySQL not good for TPC-CAnon2021/11/06 11:48 AM
        ML OK but not Image ClassificationPer Hesselgren2021/11/07 04:13 AM
  ADL Impressive Efficiency in GamesJohn H2021/11/04 03:14 PM
    ADL Impressive Efficiency in GamesKester L2021/11/04 03:42 PM
      ADL Impressive Efficiency in GamesJohn H2021/11/04 09:11 PM
    ADL Impressive Efficiency in GamesJukka Larja2021/11/05 09:09 PM
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