Huawei answers the heat objection to stacked logic with numbers it measured itself

Heat is the chip spec phone owners can judge without a bench. A handset warms during a long capture, the frame rate sags, and the peak figures stop describing the device in your hand.

The density claim aimed at that problem is not new. Huawei's July paper already put the coming processor on track for a 55% transistor-density increase over the Kirin 9030 Pro ^[12], and the latest paper reports the same figure, a change of zero percentage points between the two ^[15]. What the new round of publishing adds is the power and thermal argument: measurements offered to show the coming Kirin runs cooler and draws less than its predecessor while carrying more transistors ^[1]. Kaiyuan Securities reads the result as a chip that "reduces power consumption while increasing transistor density, allowing it to flexibly switch between functional constraints and peak performance" ^[8].

For the person holding the phone, two things are missing from that. The power saving is quoted as "as much as" 66%, on workloads the account does not name, and no sustained-load result sits next to it ^[18]. That kind of figure reads as "runs cooler," but what a user actually feels is the average over the last twenty minutes, once the package has soaked and the scheduler starts trading frames for skin temperature.

The measurements are also Huawei's own ^[1], and the source's own framing is conditional: the approach matters beyond Huawei's next handsets if the claims hold up under independent testing ^[19]. Zheng Lei, chief economist at Samoyed Cloud Technology Group, calls the method "born out of necessity" while saying there is room for development, and expects the new Kirin to fix its overheating this way ^[13].

The necessity is lithography. Tau Scaling Law, unveiled in May, is Huawei's argument that transistor density can keep climbing without cutting-edge extreme ultraviolet lithography ^[9], with LogicFolding claimed to reach densities associated with 1.4-nanometre processes by 2031 ^[10]. Huawei has published three papers since May ^[11], a cadence aimed at an audience: the Chinese packaging, materials and equipment makers who would have to supply the three-dimensional integration this depends on, and who analysts expect the work to mobilise ^[16].

Each claim sorts onto two axes before it belongs in a plan: peak figure or sustained figure, and measured by the vendor or reproduced by someone else. The density and power numbers sit in the peak, vendor-measured box, which is the right place for a design argument and the wrong place for a purchase. The box that decides whether users notice anything is sustained and independent, and it takes three inputs: clock held after twenty minutes of the same workload, skin temperature at that point, and the workload's name. Until a retail Kirin lands on a bench, Huawei has published evidence about what its architecture permits, not about what the phone does at minute twenty.