Have a look at the Notebookcheck reviews, they’re very thorough and test things like thermal throttling/efficacy of the cooling system which aren’t mentioned in

Have a look at the Notebookcheck reviews, they’re very thorough and test things like thermal throttling/efficacy of the cooling system which aren’t mentioned in most other reviews. I was in the same position last year (T470, T470s, X1C5?), but ruled out the T470s rather quickly because its cooling system was barely better than the X1C5’s, nowhere near that of the T470. I have no idea if the T480s was improved in this regard so don’t apply last year’s reasoning to this year’s lineup :) I went for the X1C5 because of the much nicer screens vs the T470 and because it seemed more future proof (2x TB3/USB-C instead of 1x and more PCIe lanes to the Thunderbolt controller). Plus, a year later and I’m still fascinated how light it is. Overall I’m extremely happy with mine.