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It's not just about clock speed. While Intel Core CPUs don't scale down to power budgets as low as ARM cores, they are impressively efficient on a perf/watt bas
by magila 10y ago
It's not just about clock speed. While Intel Core CPUs don't scale down to power budgets as low as ARM cores, they are impressively efficient on a perf/watt basis. Smart phones achieve high battery life mostly by being very aggressive about reducing CPU load in software (see iOS killing apps the moment they go into the background). General purpose operating systems don't work like that so there's more reliance on the hardware to keep power draw down.
- Redoubts 10y agothey are impressively efficient on a perf/watt basis Is that true? I thought people were trying out ARM rack servers because of the power efficiency vs perf.
- magila 10y agoThe key word there is "trying". ARM servers have had a tough time gaining traction in no small part because the hoped for power efficiency gains have not been realized.
- flamedoge 10y agosounds like Intel hit a pretty sweet work/watt by increasing work while keeping lid on wattage. ARM delivers battery life by lowering work.
- pertymcpert 10y agoNo that's not how it works at all. ARM has always been power efficiency focused.