I've had the M4 Max MacBook Pro for about two weeks now. I do not care about Geekbench scores. I wanted to see what changed in my work when the machine stopped being the bottleneck.
First thing I did was clone TOPO Contabil. 42 NestJS modules across a monorepo. On my old machine, a cold start with full compilation took about 90 seconds. On the M4 Max, it takes 23. That changes the wait from "I'll check my phone while it compiles" to "oh, it's done."
Docker builds are where things get absurd. Multi-stage builds for our production images went from 4+ minutes to under 70 seconds. I rebuilt everything three times just to make sure I wasn't hallucinating. The unified memory architecture means Docker isn't fighting for RAM anymore. I gave it 24GB and the system didn't even flinch.
I also ran our entire test suite, 42 modules, all specs in parallel, while Docker was building in another terminal, while Claude Code was indexing the codebase. The fan spun up to maybe a whisper. On my Intel MacBook Pro this would have sounded like a jet engine preparing for takeoff and then the machine would thermal throttle itself into uselessness.
Claude Code specifically benefits from this. Running an LLM-powered coding assistant means constant context processing, file indexing, large prompt construction. The M4 Max handles this without any perceptible lag. Responses feel snappier because the local processing around the API is instant; the API itself has not sped up.
One thing that surprised me: compilation isn't the bottleneck anymore, so now I notice other bottlenecks I never saw before. Network latency to our staging environment. Slow database seeds. That one integration test that takes 8 seconds because it actually hits an external API (shame on us). When the machine is fast enough, you finally see where the remaining slowness lives.
The 40-core GPU is overkill for development. I don't train models locally. But having 48 GB of unified memory means I can run our entire infrastructure stack in Docker, have 30 browser tabs open in Arc, run VS Code and a JetBrains IDE simultaneously, and still have headroom.
What I didn't expect: it changed my workflow. I used to batch tasks because context switching had a compile-time cost. Now I jump between modules freely. I run tests more often because the feedback loop is near instant. I experiment more because rebuilding is cheap.
If you write code for a living and you are on anything older than M2, I think it is worth the price. It removes friction I had stopped noticing, and it is the first machine I have been able to forget about while working.