Much faster iGPU clock ...

Article: Intel's Haswell CPU Microarchitecture
By: Exophase (exophase.delete@this.gmail.com), December 12, 2012 11:46 pm
Room: Moderated Discussions
Mark Roulo (nothanks.delete@this.xxx.com) on December 12, 2012 3:53 pm wrote:
> Maybe this is new only to me, but the iGPU clock speed seems to have
> almost doubled in Haswell compared to Ivy Bridge: 1250 vs. 650.
>
> *IF* Intel has also increased the iGPU in other ways (widening it, whatever ...) *AND*
> can solve the bandwidth starvation issue (Crystalwell maybe??), then it looks like
> the iGPU could easily double or more the performance compared to Ivy Bridge.
>
> More pressure on AMD and the low end discrete cards ...
>

If the leaked numbers are correct it's possible that they refer to turbo frequency, not base frequency. The column title "dynamic frequency" does imply this. In this case it's only a little bit higher than the highest bin on IB (1.15GHz), and lower that the highest bin on SB (1.35Hz). Combined with a higher EU count (20 vs 16) that gives a peak 35.9% improvement, given no other adjustments. In practice it'd tend to be less if the TMU capabilities haven't changed and due to main memory bandwidth staying the same.

Crystalwell is alleged to only be paired with GT3 parts, which is supposed to only appear on lower TDP mobile platforms. It's also rumored that the top clocks will be lower, which makes sense because as it stands the 17W IBs of today can't very easily hit their top GPU turbo speeds at all.
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TopicPosted ByDate
Haswell CPU article onlineDavid Kanter11/13/12 03:43 PM
  Haswell CPU article onlineEric11/13/12 04:10 PM
    Haswell CPU article onlinehobold11/13/12 05:13 PM
      Haswell CPU article onlineRicardo B11/13/12 06:09 PM
    Haswell CPU article onlineanonymou511/13/12 05:44 PM
      Haswell CPU article onlinenone11/14/12 03:40 AM
  Haswell CPU article onlinetarlinian11/13/12 04:56 PM
    Fixed (NT)David Kanter11/13/12 06:06 PM
      Haswell CPU article onlineJacob Marley11/14/12 02:18 AM
  Haswell CPU article onlinerandomshinichi11/14/12 02:53 AM
    LLC == Last Level Cache (usually L3) (NT)Paul A. Clayton11/14/12 05:50 AM
    Haswell CPU article onlineJoe11/14/12 10:38 AM
      LLC vs. L3 vs. L4David Kanter11/14/12 11:09 AM
        LLC vs. L3 vs. L4; LLC = Link Layer ControllerRay11/14/12 10:08 PM
          A pit there are only 17000 TLAs... (NT)EduardoS11/15/12 03:14 AM
  Haswell CPU article onlineanon11/14/12 05:10 AM
    Move elimination can be a µop fusionPaul A. Clayton11/14/12 06:41 AM
      That should be "mov R10 <- R9"! (NT)Paul A. Clayton11/14/12 06:43 AM
      Move elimination can be a µop fusionanon11/14/12 07:25 AM
        It does avoid the scheduler (NT)Paul A. Clayton11/14/12 08:47 AM
      Move elimination can be a µop fusionStubabe11/14/12 01:43 PM
        Move elimination can be a µop fusionanon11/14/12 09:33 PM
          Move elimination can be a µop fusionFelid11/15/12 12:49 AM
            Move elimination can be a µop fusionanon11/15/12 01:23 AM
              Move elimination can be a µop fusionStuart11/15/12 05:04 AM
                Move elimination can be a µop fusionStubabe11/15/12 05:14 AM
                  Move elimination can be a µop fusionanon11/15/12 05:48 AM
                    Move elimination can be a µop fusionEduardoS11/15/12 06:00 AM
                      Move elimination can be a µop fusionanon11/15/12 06:14 AM
                        Move elimination can be a µop fusionEduardoS11/15/12 06:21 AM
                          Move elimination can be a µop fusionanon11/15/12 06:31 AM
                    Move elimination can be a µop fusionStubabe11/15/12 11:38 AM
                      There can be only one dependencePaul A. Clayton11/15/12 12:50 PM
                    Move elimination can be a µop fusionFelid11/15/12 03:19 PM
                      Move elimination can be a µop fusionanon11/16/12 04:07 AM
                        Move elimination can be a µop fusionFelid11/16/12 07:43 PM
                  Move elimination can be a µop fusionFelid11/15/12 02:50 PM
                    Move elimination can be a µop fusionFelid11/15/12 03:03 PM
                      Correction!Felid11/19/12 01:23 AM
                    Thanks, I wasn't aware of the change in SB. Good to know... (NT)Stubabe11/15/12 03:43 PM
            Move fusion assumes adjacencyPaul A. Clayton11/15/12 07:15 AM
              Move fusion assumes adjacencyFelid11/15/12 02:40 PM
        Move elimination can be a µop fusionPatrick Chase11/21/12 11:52 AM
          Move elimination can be a µop fusionPatrick Chase11/21/12 12:12 PM
    Haswell CPU article onlineRicardo B11/14/12 09:12 AM
  Haswell CPU article onlinegmb11/14/12 08:28 AM
  Haswell CPU article onlineFelid11/14/12 11:58 PM
    Haswell CPU article onlineDavid Kanter11/15/12 09:59 AM
      Haswell CPU article onlineFelid11/15/12 02:15 PM
        Instruction queueDavid Kanter11/16/12 12:23 PM
          Instruction queueFelid11/16/12 01:05 PM
  128-bit division unit?Eric Bron11/16/12 04:57 AM
    128-bit division unit?David Kanter11/16/12 08:59 AM
      128-bit division unit?Eric Bron11/16/12 09:47 AM
        128-bit division unit?Felid11/16/12 12:46 PM
          128-bit division unit?Eric Bron11/16/12 01:24 PM
            128-bit division unit?Felid11/16/12 07:19 PM
              128-bit division unit?Eric Bron11/18/12 08:41 AM
            128-bit division unit?Michael S11/17/12 12:50 PM
              128-bit division unit?Felid11/17/12 01:44 PM
                128-bit division unit?Michael S11/17/12 02:45 PM
                  128-bit division unit?Felid11/17/12 05:49 PM
                    128-bit division unit?Michael S11/17/12 06:56 PM
              128-bit division unit?Eric Bron11/18/12 08:35 AM
  Haswell CPU article onlineJim F11/18/12 09:45 AM
    Haswell CPU article onlineGabriele Svelto11/18/12 12:52 PM
  Probable bottleneckLaurent Birtz11/23/12 01:45 PM
    Probable bottleneckEduardoS11/23/12 01:58 PM
      Probable bottleneckLaurent Birtz11/24/12 10:10 AM
    Probable bottleneckStubabe11/25/12 03:08 AM
      Probable bottleneckEduardoS11/25/12 08:15 AM
        Probable bottleneckStubabe11/28/12 04:36 PM
          Urgh. Post got mangled by LESS THAN signStubabe11/28/12 04:41 PM
          Probable bottleneckLaurent Birtz11/29/12 08:34 AM
  Haswell CPU article onlineMr. Camel11/28/12 03:47 PM
    Haswell CPU article onlineEduardoS11/28/12 04:06 PM
      Haswell CPU article onlineMr. Camel11/28/12 07:23 PM
        Haswell CPU article onlineEduardoS11/28/12 07:27 PM
          Haswell CPU article onlineMr. Camel12/12/12 01:39 PM
            Much faster iGPU clock ...Mark Roulo12/12/12 03:53 PM
              Much faster iGPU clock ...Exophase12/12/12 11:46 PM
                Much faster iGPU clock ... or not :-)Mark Roulo12/13/12 09:11 AM
                  Much faster iGPU clock ... or not :-)EduardoS12/13/12 10:38 PM
                    Much faster iGPU clock ... or not :-)Michael S12/14/12 05:33 AM
                      Much faster iGPU clock ... or not :-)EduardoS12/14/12 07:06 AM
                        Much faster iGPU clock ... or not :-)Doug S12/14/12 12:13 PM
                          Much faster iGPU clock ... or not :-)EduardoS12/14/12 12:43 PM
                  Much faster iGPU clock ... or not :-)Mr. Camel12/14/12 10:50 AM
              Much faster iGPU clock ...Michael S12/13/12 02:44 AM
                Much faster iGPU clock ...Mark Roulo12/13/12 09:09 AM
  Haswell CPU article onlineYang12/09/12 08:28 PM
    possible spam bot? (NT)I.S.T.12/10/12 03:40 PM
  CPU Crystal Well behavior w/ eGPU?Robert Williams04/17/13 02:16 PM
    CPU Crystal Well behavior w/ eGPU?Nicolas Capens04/17/13 03:30 PM
      CPU Crystal Well behavior w/ eGPU?RecessionCone04/17/13 04:20 PM
        CPU Crystal Well behavior w/ eGPU?Robert Williams04/17/13 07:37 PM
    CPU Crystal Well behavior w/ eGPU?Eric Bron04/17/13 09:10 PM
  Haswell CPU article onlineSireesh09/01/14 02:48 PM
    Haswell CPU article onlineMaynard Handley09/01/14 03:51 PM
      Great postDavid Kanter09/01/14 07:12 PM
      Thanks :)Alberto09/02/14 01:42 AM
      Thanks (NT)Poindexter09/02/14 09:31 AM
    Haswell CPU article onlineEduardoS09/01/14 04:21 PM
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