I'm curious how much slowdown a "weak" CPU can cause for real-life programming task, assuming the CPU is at least gen 4 Intel.

I never used a mobile/power-efficient CPU myself, but I do use old CPUs. For example, this I5-4210M on my T440p, it's obviously not fast compare to newer ones, but when writing code on it (Go and a bit of Rust), I don't really feel a day-or-night level difference. Sure, it's slower, but not unbearably, in fact for most cases I barely notice it.

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nehal3m 2 hours ago | parent [-]

My boss used to have an apt sticker on his ThinkPad that said 'My other computer is a data center'. In my case that's also true; I just use local I/O for KVM but the heft is in whatever I'm SSH'd into.

I daily a T480 at home and an X280 on the road. Swapped the batteries for fresh ones last week, they do around 6 hours on a charge for my use case and they run Linux so personally I don't see any reason to upgrade any time soon.

	▲	nirui 35 minutes ago \| parent [-]
		I don't remember the T480 I had was any slow, except of course when running games. So I do agree that the machine is still capable for most use cases today. But I also saw people (usually X series users) complaining on YouTube saying something like their "mobile" CPU is trash etc. My thinking is, if the slowdown is actually insignificant for real-life use cases, then I rather have longer battery life than better performance.