Oddly configured Dimensity 9300 SoC throttles during stress test losing 46% of its performance

Earlier this year we told you about the unusual configuration of MediaTek’s new flagship Dimensity 9300 chipset. The octa-core processor consists of four Cortex-X4 Prime CPU cores and four Cortex-A720 Performance CPU cores. There are no low-power Efficiency CPU cores that other application processors have. While this means that the Dimensity 9300 SoC is powerful, it also means that the chipset is prone to overheating.

Making this situation worse is that the chip was tested on the Vivo X100 Pro which features a vapor chamber which is a heat pipe used to dissipate heat to the coolest area of the chamber and away from the chipset. Even though the Dimensity 9300 is produced using TSMC’s energy-efficient N4P 4nm process node, the throttling of the chip started in just two minutes.