When the new vivo X100 Pro is in the hands of enthusiasts, we can finally get an idea of the thermal performance of the MediaTek Dimensity 9300 chipset with quad Cortex X4 CPU cores and no efficiency units.
As expected, cooling the chipset with four high-performance cores is a tough task. In the famous CPU throttling test, an eight-core processor dropped its performance by 46 percent within 2 minutes. Four of the cores are down to 1.2GHz, three to 1.5GHz, and one to just 0.6GHz – that’s compared to a 3.25GHz Cortex-X4 core, three 2.85GHz Cortex-X4 cores, and four 2GHz Cortex-A720 cores.
The Dimensity 9300 dropped its performance to 46 percent in 2 minutes.
As a reference point, the Snapdragon 8 Gen 2-equipped phone ran around 80% of its performance in our test after more than 10 minutes of CPU throttling.
The CPU throttling test is to run all CPU cores at full blast to see how the phone can handle extreme stress. The Vivo X100 Pro, like other flagship phones, has a passive cooling solution, in this case a vapor chamber designed to move heat away from the SoC. You might expect better performance from a device with fan-active cooling, but we’ve yet to see such a phone with the Dimensity 9300.
Source | through