MediaTek Dimensity 8400: Benchmarks and Specs

MediaTek has been killing it in terms of mid-range processors from the budget 6000 series to mid-range 7000 series and upper mid-range 8000 series, and the Dimensity 8400 is a testament to that. This chipset aims to deliver an almost flagship-like performance at a fraction of the cost. We put the Poco X7 Pro through a series of rigorous tests, and here's how the Dimensity 8400 Ultra performed.

It's worth noting that the "Ultra" moniker denotes that the processor has been optimised for performance with better thermals in the phone that it's powering. Therefore, there isn't a difference between the standard Dimensity 8400 and Ultra.

MediaTek Dimensity 8400 AnTuTu Score

Right off the bat, the Dimensity 8400's impressive score of 1,827,426 points in the Poco X7 Pro tells us a lot of things. Firstly, it's as good as, if not more powerful than Snapdragon 8s Gen 3, but scores even better in the GPU department. The chipset comprises all Cortex-A725 cores with 1x clocked at 3.25 GHz, 3x clocked at 3 GHz and 4x clocked at 2.1 GHz. The GPU is a Mali-G720 MP7 with a frequency of 1.3 GHz.

The Poco X7 Pro performs pretty well in CPU with 582,057 points, but where it truly shines is in the GPU department with 552,544 points. It suggests that the Dimensity 8400 chip is more than capable of handling high-fidelity gaming at high frame rates. It scores 288,247 and 404,578 points in Memory and UX, respectively, which is pretty good as well.

MediaTek Dimensity 8400 Geekbench Score

Moving to Geekbench 6, the processor posts 1,602 points in single-core and a whopping 6,345 points in multi-core tests. While the single-core performance is solid, the multi-core is the main highlight.

Crossing the 6,000-point barrier indicates exceptional multitasking capabilities and raw processing power for demanding applications and heavy gaming. The Dimensity 8400 outperforms many direct competitors in this segment, showcasing the prowess of the chipset.

MediaTek Dimensity 8400 CPU Throttling Test

In our tests, the Dimensity 8400 showed a tendency to throttle under sustained heavy load to manage thermals. In a 15-minute test, it maintained 71% stability, while a longer 60-minute session saw it stabilise at 74%.

While these numbers indicate aggressive thermal management, the average GIPS actually increased significantly in the longer test, suggesting the Poco X7 Pro's 5,000mm² Vapour Cooling chamber kicks in effectively to maintain higher performance levels after an initial dip.

MediaTek Dimensity 8400 3DMark Score

For graphics, the chipset shines in peak performance but faces some stability challenges. In Wild Life Extreme, it hit a high score of 3,994, which is great, but the stability dropped to 61.5% over sustained loops. Reinforcing findings from the CPU throttle test, this chip runs both hot and fast, and will throttle to keep temperatures in check during marathon gaming sessions.

MediaTek Dimensity 8400 Speedometer

In Speedometer 3.0, the Dimensity 8400 scores a very good 333 runs per minute, which is extremely fast. It suggests that the processor can handle almost any kind of web page you throw at it with ease. The high score also suggests that web browsing, in general, will be fluid and fast without any hiccups.

Benchmark Gallery

MediaTek Dimensity 8400 Specifications

Verdict

The MediaTek Dimensity 8400 or the 8400 Ultra is a powerhouse that raises the expectations in the case of sub-flagship chipsets. With an AnTuTu score exceeding 1.8 million and multi-core performance that rivals top-of-the-line chips, it's a treat for gamers and power users on a budget.

However, it exhibits throttling under extreme stress tests and would require the phone to have a good cooling system. The Poco X7 Pro's performance was just enough, if not a bit lacking, leading to throttling. However, despite the same, the processor exhibits good performance gains. For users looking for flagship-grade speed without the flagship price tag, the Dimensity 8400 is a good option.