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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 19 Dec 2020
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      Another benchmark, M1 vs Ryzen 5800X on single threaded workloads. Ryzen wins the benchmarks, but the M1 has better perf/watt.https://github.com/tuhdo/tuhdo.github.io/blob/master/emacs-tutor/zen3_vs_m1.org …

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    2. Hector Martin‏ @marcan42 19 Dec 2020
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      Package power delta for 0 to 1 core loading on M1 is ~10W peak, ~25W for the Ryzen, though the author undervolted it so it might be lower. Core power deltas seem to be closer to 6W for M1, 17W for the Ryzen (guessing from the non memory intensive test for the M1).

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    3. Hector Martin‏ @marcan42 19 Dec 2020
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      But that Ryzen is definitely not optimizing for perf/watt. The 5600X is only ~5% slower on clock but ends up on ~17W package, ~12W core delta. So again I'm getting a bit of a "meh" feeling here.

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    4. Hector Martin‏ @marcan42 19 Dec 2020
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      I think if AMD moved to 5nm and put out an APU with the same design targets as the M1, they could hit comparable results. But Apple has been improving their chips at a ridiculous speed... So the real question is what will happen on their *next* generation.

      3 replies 5 retweets 49 likes
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    5.  🏳️‍🌈Anton 🏳️‍🌈‏ @antnisP 19 Dec 2020
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      Replying to @marcan42

      But isn't AMD not even fully on 7nm yet since the IO chip, which takes quite a bit of space, is still 12? So even if Apple iterates fast, AMD has lots of headroom to work with.

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      Hector Martin‏ @marcan42 19 Dec 2020
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      Replying to @antnisP

      Yes, but the per-core numbers are largely for the 7nm chiplets, so you can mostly ignore the IO die issue for that side of the equation.

      6:43 PM - 19 Dec 2020
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      • 🏳️‍🌈Anton🏳️‍🌈
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