"Impressive" is Linley Gwennap's comment on the new ARM Cortex-X1 design that will appear in top chips late in 2020. The target is "a 30% gain in per-clock performance (IPC)." Nearly all mobile phone processors are built around ARM designs, from Apple to Huawei. 

TSMC already is producing millions of 5 nm chips for this year's iPhone and probably for Huawei as well, The advanced process reduces energy, heat, and chip area. That allows ARM to design a larger but more robust chip.

Chips with the X1 design will benchmark 5-25% higher, with an additional boost from the 5 nm process. Speed like this is great marketing and good for gamers, but makes little practical difference for most of what we do. The same is true of 5G itself; very few practical applications can use more than the 75 Mbps common in 4G.

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