I've had a X1 since 2017. The CPU is pretty weak, but it's still solid overall. Still on the original battery too (yes the capacity has gone down from 57 Wh to 25 Wh). I've gotten other computers through work since, but the X1 is still my favourite laptop! In fact I'm typing on it now.

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nirui 3 hours ago | parent [-]

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 36 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.