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Cake day: June 6th, 2025

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    1. Over-focus on the most popular artists. There is a long tail of music which only gets preserved when a single person cares enough to share it. And such files are often poorly seeded.
    • We primarily used Spotify’s “popularity” metric to prioritize tracks. View the top 10,000 most popular songs in this HTML file (13.8MB gzipped).
    • For popularity>0, we got close to all tracks on the platform. The quality is the original OGG Vorbis at 160kbit/s. Metadata was added without reencoding the audio (and an archive of diff files is available to reconstruct the original files from Spotify, as well as a metadata file with original hashes and checksums).
    • For popularity=0, we got files representing about half the number of listens (either original or a copy with the same ISRC). The audio is reencoded to OGG Opus at 75kbit/s — sounding the same to most people, but noticeable to an expert.

    Perhaps I’m reading this wrong, but is this not a little backwards? Since unpopular music is poorly preserved, shouldn’t the focus be on getting the least popular music first?














  • They have better battery life than most laptops, but it also strongly depends on what configuration you use and what you’re doing. For instance, my M1 Max laptop has never hit its stated battery life and frankly is pretty close to my AMD laptop (when its battery wasn’t half dead). The AMD laptop is admittedly heavier though.

    AFAIK they’re about the same as the M4 in terms of battery life. If you look at their marketing, their battery life improvements are based on their Intel and M1 laptops (whose owners they seem to be targeting for upgrades).


  • From what I’ve heard, there are AMD laptop chips with better multi-core performance, although worse single-core. Other than the spec bump, this is pretty much the same as the M4 laptops.

    Basically if you like macOS (and only macOS since Linux will probably take half a decade to show up given the current rate of Asahi Linux support with newer chips) and specifically need more perf for whatever reason (especially for AI), it’s a nice upgrade.