Retired Microsoft engineer, Dave's Garage YouTube creator
Dave Plummer
Profile
Dave Plummer is what happens when a retired operating-systems engineer discovers YouTube and decides to explain how the machine actually works — pointer by pointer, transistor by transistor. Born in Regina, Saskatchewan in 1968, he talked his way into a Microsoft internship in the MS-DOS group in 1993 and stayed a decade. In that time he wrote the Windows Task Manager — the Ctrl+Alt+Del panel that a billion people have stared at while waiting for something to unfreeze — along with Windows ZIP folder support, the Space Cadet Pinball port to Windows NT, and pieces of the Windows shell. He holds six software patents and, by his own telling, seeded a hidden image of Microsoft Bob into Windows XP’s anti-piracy code. He left in 2003.
Since 2018 his channel Dave’s Garage (over 1.1 million subscribers) has become a reliable stop for developers who want history and mechanism rather than hype. His breakout was the “Software Drag Racing” series — benchmarking the Sieve of Eratosthenes across C#, C++, and Python — which spun off a GitHub community project, Primes, with implementations in 100-plus languages contributed by viewers. It’s a genuinely useful artifact: a reproducible, Docker-containerized cross-language performance corpus that came out of a hobby video.
For someone learning AI, Plummer is valuable precisely because he refuses to be mystified by it. His framing of large language models is deflationary in the best sense: the machine “is not thinking in some mystical sense — it’s just grinding through arithmetic to update a few thousand carefully stored numbers,” and the glamour comes from doing that at staggering scale. He’s put that thesis to the test literally, running a transformer model — a descendant of the tiny-LLM lineage popularized by Andrej Karpathy’s llama2.c — on a 47-year-old PDP-11 with a 6 MHz CPU and 64 KB of RAM, hand-written in assembly. It’s a stunt, but an instructive one: strip away the datacenter and you’re left with matrix multiplies. He’s also produced practical head-to-head comparisons of ChatGPT, Claude, Gemini, and Grok for everyday tasks.
What Plummer offers the AI-curious developer isn’t cutting-edge research — he’s not a researcher, and doesn’t pretend to be. It’s perspective: a veteran who shipped systems software when every byte and cycle mattered, arguing that the old obsessions with efficiency and optimization are about to matter again as compute becomes the binding constraint. He is also unusually open about being autistic and having ADHD, which he’s written about at length and treats as inseparable from how he built his career.
Books
Key Articles & Papers
Primes: A Software Drag Race (100+ languages)Videos
Controversies
There is nothing career-defining here, but two items are worth noting honestly. In 2006 the Washington State Attorney General sued Plummer’s post-Microsoft venture, SoftwareOnline LLC, over utilities like “Registry Cleaner,” resulting in a settlement with $150,000 in penalties plus suspended fines — the kind of aggressive-marketing utility software common in that era. Separately, a small subset of the developer community finds his systems-veteran framing of modern AI (“it’s just arithmetic at scale”) too dismissive of what emergent capabilities represent. That’s a reasonable debate rather than a scandal — and Plummer’s demystifying instinct is arguably healthy for beginners drowning in hype.
Spotify Podcasts
YouTube
