New MacBook Pro with 9th Gen Intel CPUs

Discussion in 'Apple and Mac OS X' started by electrosoft, May 21, 2019.

  1. electrosoft

    electrosoft Tick Tock Clarice....

    Reputations:
    1,622
    Messages:
    2,792
    Likes Received:
    442
    Trophy Points:
    101
    Snazzy did a decent review including freezer treatment and liquid metal on the 9980hk (2.4) model.

    The takeaway is the CPU tops out at ~50w under load (from an 85w availability), and regardless of TIM used, the tiny heatsink saturates (just quicker with LM) so it is basically useless except for quieting down the fans during low to mid loads. It isn't worth the trade off and he'll be switching back to traditional thermal compound.

    The reason this year's model seems to work better is Apple switched the TIM they use with better application. Wait, better TIM applied correctly yields better thermals?! SHOCKING! :p

    Apple purposely targets fan profiles to run as quiet as possible eschewing optimal cooling unless throttling is happening. The 6000rpm fans are also very loud under load (I can attest to that lol), but setting your own fan curves yields better performance (duh).

     
  2. Richard Zheng

    Richard Zheng Notebook Evangelist

    Reputations:
    30
    Messages:
    327
    Likes Received:
    151
    Trophy Points:
    56
    Is it limited in TDP? It seems like LM and cranking fans doesn't do quite as much as I would expect. It is either power throttled at 50W or the puny heatsink just can't handle the chip
     
  3. electrosoft

    electrosoft Tick Tock Clarice....

    Reputations:
    1,622
    Messages:
    2,792
    Likes Received:
    442
    Trophy Points:
    101
    It's the puny heatsink for the hot and heavy workloads.. It's so small that all LM does is speed up the initial saturation under heavy load and, relatively quickly, the temps plateau as the modest HSF cant dissipate that much heat even @ 50w.

    I do suspect in lighter workloads that can clock higher and not thermal throttle, power throttling comes into play as ~50w is the cap which makes sense in a total power delivery system of 85w for the entire system.

    Basically, if the heat doesn't get ya, the power limits will. Sometimes you might get lucky and experience both. :(

    Is the 9980hk working within baseline spec for many use cases? Yes, so Apple is delivering as modestly promised. But it's a shame with a chip that is designed to offer so much more when given better cooling and more power is hindered on both fronts.
     
  4. saturnotaku

    saturnotaku Notebook Nobel Laureate

    Reputations:
    3,878
    Messages:
    7,266
    Likes Received:
    2,774
    Trophy Points:
    331
    I've never understood Apple's dogged insistence in only offering an 85W AC adapter with its laptops. If it's because of aesthetic/design considerations, I will happily point them in Razer's direction as they have consistently managed to produce slim 150-160W power bricks for their machines.
     
  5. electrosoft

    electrosoft Tick Tock Clarice....

    Reputations:
    1,622
    Messages:
    2,792
    Likes Received:
    442
    Trophy Points:
    101
    Here is a more detailed monitoring of the power envelope and thermals of the 9980H (not HK) in the MBP 15 2019 using CB20 chained runs.

    It is drawing up to 81w (!) initially before the heat quickly sends it into a tailspin to ~2.9ghz (still ~600mhz above rated speed).

    Just for a proper apple to apple comparison, I would like to see someone with both apply LM or Kryo to both top HK models, since Apple switched both TIM and application method on the 2019.

     
    Last edited: Jun 1, 2019
  6. Richard Zheng

    Richard Zheng Notebook Evangelist

    Reputations:
    30
    Messages:
    327
    Likes Received:
    151
    Trophy Points:
    56
    As with most apple laptop, they use crazy high turbo boosts over a short period of time to accelerate bursty loads to maintain a fast experience, but performance tanks onec you do something for more than 1 minute
     
    hmscott likes this.
  7. electrosoft

    electrosoft Tick Tock Clarice....

    Reputations:
    1,622
    Messages:
    2,792
    Likes Received:
    442
    Trophy Points:
    101
  8. Papusan

    Papusan JOKEBOOK's Sucks! Dont waste your $$$ on FILTHY

    Reputations:
    21,406
    Messages:
    23,003
    Likes Received:
    39,664
    Trophy Points:
    931
    Vasudev likes this.
  9. Raidriar

    Raidriar ლ(ಠ益ಠლ)

    Reputations:
    1,445
    Messages:
    5,327
    Likes Received:
    3,761
    Trophy Points:
    431
    It amazes me that Apple continues to disregard thermal and power constraints, and to top it all off, marries a broken motherboard design to a broken keyboard design. Hey at least they’re consistent
     
    Vasudev likes this.
  10. Vasudev

    Vasudev Notebook Nobel Laureate

    Reputations:
    6,704
    Messages:
    10,175
    Likes Received:
    7,459
    Trophy Points:
    931
    Yeah, but there are only few people who notice their JBP(Jokebook pros) thermal throttling out of the box for free even after shelling out 3000$ plus taxes and in reality perform worse than 5 yr Macbooks.
     
    hmscott likes this.
Loading...

Share This Page