Huawei Claims Its New Kirin Chip Solves the Overheating Problem — But the Verdict Isn’t In

Huawei claims its new Kirin 2026 chip solves the overheating problem plaguing 3D-stacked processors, packing 55% more transistors while cutting power use by up to 66%.

The paper, published Friday on ChinaXiv, a repository for research that hasn’t yet been peer-reviewed, is closer to a filing entered before any trial has been scheduled: a formal claim on the record, tested so far only by the party that filed it. Authored by He Tingbo, chairwoman of Huawei’s Scientist Committee and president of its semiconductor business unit, the paper directly rebuts skepticism that stacking chip logic vertically creates an unmanageable heat problem, a question with real stakes for Huawei’s coming Mate-series launch and its broader effort to close the manufacturing gap left by US restrictions on advanced lithography tools.

The figures Huawei is citing are specific: 55% more transistors per square millimetre and up to 66% less power draw than the Kirin 9030 Pro, its immediate predecessor, achieved by stacking chip layers vertically and shortening the distance signals have to travel.

That’s a phone-chip story until Kaiyuan Securities, a domestic brokerage, widens the frame: in a note to clients, it pointed investors toward fabs, chip packaging and testing, and equipment makers across China’s supply chain as the approach’s likely next beneficiaries.

Widen the frame once more and it stops being a supply-chain story at all. It becomes a chip-war story, one more data point in whether Chinese semiconductor design can keep advancing without the extreme ultraviolet lithography tools Washington won’t sell it.