siltop: A btop-style monitor that shows real power, clocks and temps on Apple Silicon Macs

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A developer built siltop, a terminal system monitor aimed at Apple Silicon Macs, after finding that btop could not report chip-level data such as power draw, GPU activity or per-core clock speeds. The tool reads power, clock and temperature figures directly from the SMC and IOReport interfaces without requiring sudo. Its creator says it uses about 1.3% of one CPU core, compared with roughly 2.5% for btop on the same machine. siltop also offers plain-language diagnostics, such as flagging a busy process or high fan speed, and can be installed via Homebrew with a demo mode that needs no workload. The creator is asking owners of M1/M2 Ultra and M5 Max machines to try it and share feedback.

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