On the surface, these two phones look evenly matched: both ship with 12GB of RAM, 512GB of storage, a 4nm process node, and 8-thread big.LITTLE CPU architectures. But dig into the silicon and the Poco X7 Pro pulls decisively ahead. Its MediaTek Dimensity 8400 peaks at 3.25 GHz on its prime core, compared to the Honor X9d's Snapdragon 6 Gen 4 topping out at 2.3 GHz — a gap that carries real weight in CPU-intensive tasks like gaming, video editing, and heavy multitasking. Across all core clusters, the Dimensity 8400 runs at substantially higher frequencies, suggesting a consistent raw performance advantage.
The memory subsystem tells an even starker story. The Poco X7 Pro's maximum memory bandwidth of 68.2 GB/s dwarfs the Honor X9d's 12 GB/s — nearly six times more throughput. This is not a spec to gloss over: memory bandwidth directly affects how quickly the CPU and GPU can access data, impacting everything from app load times to gaming frame consistency. The Poco also supports up to 24GB maximum memory versus the X9d's 16GB cap, giving it more headroom for future configurations. Its GPU clock of 1300 MHz versus 800 MHz on the Adreno 810 further reinforces its graphics advantage.
The Poco X7 Pro wins this category convincingly. The Honor X9d is no slouch for everyday tasks, but the Poco outclasses it on every meaningful performance metric — CPU speed, GPU clock, RAM throughput, and memory bandwidth — making it the clear choice for users who demand sustained, high-performance computing from their device.