Chris Jenkins

@ic_apple

I love electrons. Contributing writer

Maryland
macrumors.com
加入于 2015年1月
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  1. 转推了
    9月23日

    Apple Watch Series 6: Phenomenal cosmic power, itty bitty living space.

    2回复 9 转推 45 喜欢
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  2. 转推了
    9月20日

    Measured perf counters on A12 vs a 9900K. Xcode 10.2.1 vs Clang 10.0.0. Arm64 retired instructions = 109.84% of x86-64. Actual IPC of A12 = 170.14% of Skylake. Branch misprediction rate 25% lower for Apple, in contrast to what some French people say.

    23回复 49 转推 225 喜欢
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  3. 9月15日

    This is also perhaps a deeper reflection of the progress of process technology. TSMC is advertising smaller and smaller performance gains with each node jump. They look more like the half-node optical shrinks in that regard. The main gain is transistor density.

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  4. 9月15日

    It wouldn’t be the first time Apple touted efficiency and sustained performance. This was an expressed goal of the A8.

    Today Apple announced the industry's first commercial 5nm silicon: The Apple A14. Although Apple's presentation seemed impressive when compared to the A12, against the A13 the new A14 shows rather timid generational improvements- here's our theories:
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  5. 9月15日

    With that transistor increase, die size will be relatively flat over A13.

    A14 chip is built on a 5-nanometer process, and it’s the first in the industry to have a 5nm chip. 11.8 billion transistors in the A14, an increase of 40% over 7-nanometer chip. Brings better performance and efficiency.
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  6. 9月14日

    120Hz is a power hog without much benefit to most users.

    Kuo: iPhone 12 Lineup Won't Support 120Hz, 5.4-Inch Model Will Have Slightly Narrower Notch
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  7. 9月14日

    Nvidia’s acquisition of ARM will likely mean little for Apple in the near and middle term. ARM is a vehicle to increase the leverage Nvidia has for their other products and platforms, including their stated AI goals. I believe their stated intent to honor existing licensing.

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  8. 9月3日

    This is a very good summary of TSMC’s “3DFabric” family of advanced packaging roadmap.

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  9. 6月22日

    All valid, and if Apple wants to be particulalry aggressive, they could use 2.5D memory if they keep the GPU integrated.

    回复 @ic_apple
    Don't forget - 20% IPC boost (A13 over A12) - likely similar IPC boost for A14 over A13 - better memory controller (two or three channels, rather than iPad's single channel that's run 128-bit wide rather than 64-bit wide) So 1.5x IPC boost seems a conservative assumption.
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  10. 转推了
    6月22日

    Arm has a few months to announce Armv9 and Apple to actually employ it in the A14's. It would be *super weird* if the first gen Arm Macs need to target v8 NEON things only for to redo things on SVE2 a year later.

    6回复 3 转推 61 喜欢
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  11. 6月22日

    A12Z should be rather weak compared to what a dedicated desktop/laptop chip can achieve in clock speed if nothing else. Many desktop chips see their TDPs rise 3x over mobile variants (thanks to voltage bumps) just to hit desktop CPU speeds.

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  12. 转推了
    6月4日

    Huge Apple Patent. This shows Apple can make your vision better. sent a report on this to his clients this morning. this is what we are talking about. Apple is disrupting eyeglasses.

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  13. 5月29日

    Would be fairly significant in a lot of respects. Apple has historically opted for wider and slower designs to maximize efficiency. Favoring clock speed could point to a combination of inability to extra further IPC gains or processor designs that allow high speeds w/ low voltage

    Apple's A14 chip could be first ARM CPU to pass 3 GHz - The Tech Report - by Eric Frederiksen
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  14. 转推了
    4月27日

    iPhone SE Teardown: 3D Touch Chip Removed, iPhone 8 Camera Sensor, and More by

    6回复 33 转推 161 喜欢
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  15. 4月21日

    The key here is not a delay related to an Un-anticipated design change, but a lack of ability to do the appropriate compliance testing. A design change wouldn’t be unusual, particularly for a new process where production tolerance may not be well understood.

    Kuo: mmWave 5G iPhones Have ‘Potential Delay Risk,’ Production on 6.7-Inch iPhone Delayed to October by
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  16. 转推了
    4月16日

    iPhone SE 2020 (US variant: FCC ID BCG-E3500A; model A2275) FCC OET lab tested LTE uplink transmit max antenna gain. LAT 1 (i.e. lower antenna) is primary with highest EIRP, regardless of antenna gain. EIRP and conducted power graph(s) to come later.

    2回复 4 转推 7 喜欢
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  17. 转推了
    3月3日

    "Murthy ordered a three-month “timeout” in 2018 so engineers could retrace their steps and revise the 10-nanometer production recipe."

    3回复 7 转推 17 喜欢
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  18. 转推了
    2019年11月15日

    If anybody's going to take on Apple CPUs, then it's going to be ex-Apple engineers; Keep an eye on this in the next years. I wonder if their business model will be just silicon or also IP.

    3回复 3 转推 27 喜欢
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  19. 2019年11月13日

    AMD’s Navi makes its mobile debut. With 24 CUs and up to 8GB GDDR6, performance should be somewhere around 50% of the desktop 5700.

    16-inch MacBook Pro is here! 🎉 - Larger display - Magic Keyboard with scissor mechanism - A physical Esc key - Up to 8-core 9th-gen Intel processor - Up to 64GB RAM + 8TB storage - Up to AMD Radeon Pro 5500M graphics - Upgraded speakers, mics - $2,399+
    1回复 3 转推 12 喜欢
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  20. 转推了
    2019年10月27日

    I've updated the A13 article with a die shot analysis and breakdown based on the recently released image by Confirms 4MB L2 for the small cores and 16MB SLC.

    4回复 11 转推 50 喜欢
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