Carrizo Details Leaked

Discussion in 'Frontpage news' started by BLEH!, Feb 22, 2015.

  1. BLEH!

    BLEH! Ancient Guru

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  2. Fox2232

    Fox2232 Guest

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    a10-7850k ~ 2.41B of transistors. This slide shows 3.1B? (it probably means that excavator has still around 2.4B of transistors, but is considerably smaller)
    With this there are still 4 CPU cores + 8 GCN cores? should have been up to 12 GCN cores, ti would be big win.

    But 2nd slide is very interesting... (Sadly interesting)
    - Excavator can go down to 2.5W.
    - if we take 20W Steamroller, it will have same clock speed as 20W Excavator
    - below 20W Excavator can run at higher frequency than Steamroller, above 20W Excavator is actually worse

    In contrast to that 1st image claims 40% power consumption reduction and 5% higher IPC. Imagine Steamroller 65W APU, which are great 65W * 0.6 = 39W, that would not look bad, but 2nd picture actually says that it will not happen.
    I think Excavator can have 45W APU with performance of Steamroller 65W. Question is what TDP will be highest available to notebooks. I would love to have just 45W APU with user configurable TDP from like 5W to 45W.

    Then again next thing 2nd image shows:
    - to get from 20W to 5W Steamroller had to drop 45% of its frequency
    - to get from 20W to 5W Excavator has to drop only 33% of its frequency

    And I think that 2nd image is wrongly made, as not in single part of this normalized graph Excavator exhibits 40% lower power consumption while running same clocks as Steamroller.

    None the less, if Excavator is 29% smaller, it is cheaper to make too. It may just stand a chance in notebooks against intel as price can be good, and one can only hope that power consumption is as low as numbers show, because that graph is just sad.
     
    Last edited: Feb 22, 2015
  3. Fox2232

    Fox2232 Guest

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    Not to mess with my #2 post here are some more and this time positive things:
    2nd slide shows normalized clock/power consumption for CORE PAIR which I kind of overlooked.
    In other words it is just figure for 1 Excavator module, not for entire APU. They made quite messy slides.

    It therefore says that CPU cores itself (likely without caches and other stuff around) are equal at 10W per core, or 20W per module. Therefore 2 modules (4 cores) of Excavator would at 40W have same clock speed as Steamroller.
    Below that wattage there will be improvement of some kind.
    It means that in 35W or even 45W APU there is power saving for sure. And it is economically smart to make them.
    And since power figures were per module, 4 modules will be like 5W + 7W GPU & other stuff, so lowest 4+8 Carrizo may go somewhere around this.
     
  4. spp85

    spp85 Guest

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    Superb APU for laptops and netbooks

    Sadly Intel wont allow this APU's presence in the mobile world :bang: All the best to see this chip in real machine
     

  5. Fox2232

    Fox2232 Guest

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    It will be attractive for note/netbook makers, AMD earlier promised that they'll deliver whole platform (including boards design).
    And since Carrizo is full SoC including southbridge, board design is to be easy. Manufacturing costs should be low, and It can be very small PCB. Allowing to integrate bigger batteries.

    BTW, i have seen rest of slides:
    - S0i3 power state should be entered in less than 1 second on the fly and APU will be reduced to around 50mW
    - Slide here with power savings is just comparison of High performance vs High Density library, there are other slides showing additional power savings from AVFS modules altering frequency based on Voltage fluctuation instead of keeping stable clock at expense of burning extra energy if Voltage drops
    - And as before, slides are mess at some places, like stating there are 10 AVFS and image next to it shows 11
    - And as before, once GPU is under heavy load CPU part gets sacrificed, but in total I think there will be quite positive difference in performance at same TDP

    (I was waiting for FX-7600p without dGPU for quite some time, it never came. Maybe this time around some manufacturer delivers 35/45W 4C+8G piece.)

    What sales would have 12/13.3" notebook without Optical drive but additional battery? APU part itself + cooling + 1x HDD + 2x m.2 sata would take so small place that 50~60% of space could be battery.
     
  6. xIcarus

    xIcarus Guest

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    Yeah, screw Intel. They're dominating with their low-power high-performance solutions. How can they possibly dare to do that?

    /s

    Are you seriously blaming Intel for AMD's ridiculous inability to compete? AMD's power consumption is off the charts. If this Carrizo thing is as good as they say, they may have a chance to gain marketshare.
    But I simply fear that it's going to be another disappointment and I will still buy high-priced Intel hardware.
     
  7. BLEH!

    BLEH! Ancient Guru

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    All the consoles are presently AMD powered...
     
  8. stevevnicks

    stevevnicks Guest

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    looking like a nice little chip, they just need to compete in the high end cpu market which im sure they said they are not aiming for high end cpu against intels high end cpu's and are investing more resoruces to lower power devices?

    sure i read words to that effect few years back when they started laying people off?

    it was quite a while back maybe on toms hardware or somewhere like that cant remember?

    or i miss understood?
     
  9. Cryio

    Cryio Master Guru

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    We need just one OEM to deliver a properly flagship notebook and ultraslim with Carizzo, one the FX 8600P or something like that and one with A10 7500.

    On desktop I'm interested only in CPU performance.

    If anyone knows, clock for clock, how is Athlon's Steamroller comparing to FX's Piledriver ?
     
  10. icedman

    icedman Maha Guru

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    Great apu but intel will kill kill it with their heavely subsidised mobile chips. If amd could compete in desktop and force intels prices down they wouldnt be able to take losses and mobile and this apu would stand a chance.
     

  11. sykozis

    sykozis Ancient Guru

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    The slides look impressive. Lets see how the product actually performs. Until then, I'm waiting for AMD's "Zen" to be released in mid-2016. If it's all that it's claimed to be, I'll upgrade then....
     
  12. Fox2232

    Fox2232 Guest

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    I have seen weird rumor about Zen being APU based revolution.
     
  13. vbetts

    vbetts Don Vincenzo Staff Member

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    Personally, as long as the power draw of their APU's go down I would consider that a win as long as there's no performance loss due to limited power. I also know it won't happen any time soon, but DDR4 would help out with the igpu performance.
     
  14. CybrSage

    CybrSage Member Guru

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    I am waiting for Zen to upgrade my HTPC. I applaud these chips and hope they make AMD a profit so Zen can come to me sooner than later. :)
     
  15. sykozis

    sykozis Ancient Guru

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    Zen is replacing FX....
     

  16. Fox2232

    Fox2232 Guest

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    i5-5257U Iris 6100 in newest 14nm intel 28W $315: http://www.3dmark.com/3dm11/9454232
    FX-8800p GCN 1.3 in newest 28nm AMD 35W $less: http://www.3dmark.com/3dm11/9453670
    intel graphics: 1566; AMD graphics: 2700 (+72%)
    intel physics: 4113; AMD physics: 3128 (-24%)

    in contrast i5-5300U new 14nm intel 15W $281: http://www.3dmark.com/3dm11/9471830
    intel graphics: 881; intel physics: 2803
    intel goes from 15W to 28W (+87%) to gain 78% higher graphics and 47% higher physics scores while total productivity/gaming potential is still lower than AMD's 28nm chip.

    btw. i5-5300u is 2.3@2.9GHz; i5-5257U is 2.7@3.1GHz. FX-8800p clock speed is only guess 2.1@3.8GHz. Hard to say now, once we have minimum clocks under load we can guess real IPC difference.

    A10-7800 older 28nm 65W $160 AMD: http://www.3dmark.com/3dm11/8886969
    AMD graphics: 2353; AMD physics: 4075
    AMD goes from 65W to 35W (down 46%) to gain 15% higher graphics and lose 23% of physics score. Numbers are good to me.

    (I could not find FX-7600p equivalent score, which would be most interesting comparison.)
     
    Last edited: Feb 24, 2015
  17. xIcarus

    xIcarus Guest

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    Flagship gaming notebooks will always have dedicated GPUs. I believe you were referring to gaming notebooks, no? Because outside gaming there's little use for that extre igpu punch.
     
  18. Fox2232

    Fox2232 Guest

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    He did not say "Gaming" :) And people play quite well just on a10-7800.
    Since slides mention shift from CPU based architecture into CPU+GPU friendly, I quite believe that this FX-8800p may have higher graphical performance than previous desktop generation.

    Now think about it this chip has 23% lower CPU performance than a10-7800, what kind of GPU this would bottleneck? I am pretty sure its 512SP iGPU will not be bottlenecked even if it gained 50% additional power.

    So, gaming performance of this 35W carrizo may prove to be equal/better than 65W kaveri in most of games. Benchmarks values points towards this, and who knows if those were final chips.
     
  19. thatguy91

    thatguy91 Guest

    Intel are supposedly releasing 10 nm CPU's next year, and 7 nm CPU's in 2018. Currently, it still appears that AMD will have 28 nm CPU's competing against 10 nm CPU's. AMD really needs to rethink the release schedule of Zen (from what it appears to be so far anyway) such that they don't have old APU's mixed with new desktop CPU's etc. They need to introduce it across the board on the latest process available to them.
     
  20. Fox2232

    Fox2232 Guest

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    Some 14nm chips are postponed...
    2 days ago intel announced Tick-Tock schedule from now on moving from 2 years to 3 years.
    Announcing 7 nm chips is hyping as much as people saying nV/AMD will have 14/16nm at end of 2014. Those were plans, technology fails.
    At time AMD moves APU to 14nm (2016) intel will have 10nm, and from papers, there will not be that big of a benefit.

    Are those 14nm chips cheap to make or development of this increased price too high? AMD staying at 28nm which is becoming cheaper by day. And in 2015 releases I think APUs will be very competitive at same TDP.
    Anyone thinks tablets with S0i3 power state?
     

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