On paper, both phones share the same 4nm fabrication node, 12GB of RAM, and an 8-core big.LITTLE CPU layout — but that surface-level similarity quickly dissolves when you look at actual performance figures. The Poco X7 Pro's AnTuTu score of 1,663,422 is more than double the Nothing Phone (3a)'s 816,384, and the Geekbench 6 multi-core gap tells the same story: 6,137 vs 3,239. These are not marginal differences — they place the two phones in effectively different performance tiers, with the Poco X7 Pro's Dimensity 8400 competing closer to flagship territory while the Snapdragon 7s Gen 3 is a solid mid-range performer.
The architectural advantages run deeper than clock speeds. The Poco X7 Pro's memory bandwidth of 68.2 GB/s dwarfs the Nothing Phone (3a)'s 25.6 GB/s, meaning data can be fed to the CPU and GPU far more rapidly — directly benefiting multitasking, game loading times, and computational workloads. Its GPU also clocks in at 1300 MHz versus 1050 MHz, reinforcing its edge in graphics-intensive tasks. The Poco X7 Pro additionally supports up to 24GB of maximum memory versus 16GB, giving it more headroom for future configurations.
Storage is another area where the Poco X7 Pro pulls ahead, offering 512GB of internal storage compared to 256GB on the Nothing Phone (3a) — double the space at the base configuration. For users who prioritize raw performance, gaming, or heavy multitasking, the Poco X7 Pro holds an unambiguous and substantial advantage in this category across every measurable metric.