At the core of both devices sits a 4nm MediaTek chipset, but they are not equals. The Poco X7 Pro runs the newer Dimensity 8400, while the GT 30 Pro uses the Dimensity 8350 — and benchmark scores reflect this generational gap clearly. The Poco X7 Pro scores 1,663,422 on AnTuTu versus 1,450,000 for the GT 30 Pro, roughly a 15% lead. The Geekbench 6 multi-core gap is even wider — 6,137 versus 4,700 — indicating the Dimensity 8400 handles sustained, parallel workloads like video rendering, multitasking, and heavy game loading noticeably faster. Single-core performance is closer (1,583 vs 1,536), meaning everyday responsiveness for simple tasks will feel similar on both phones.
GPU performance is an interesting split. The GT 30 Pro's Mali G615 MC6 runs at a higher clock speed of 1400 MHz versus the Poco X7 Pro's Mali G720 MC7 at 1300 MHz — but the G720 is an architecturally newer and wider GPU with 7 cores versus 6. Clock speed alone does not determine graphics output; the newer architecture of the G720 gives the Poco X7 Pro an overall GPU advantage in complex 3D rendering, which the AnTuTu scores already factor in. One notable win for the GT 30 Pro is RAM speed at 8533 MHz versus 4267 MHz, which can benefit memory-intensive tasks and rapid app switching — though both phones share the same 12GB RAM, 512GB storage, and maximum memory bandwidth.
The Poco X7 Pro also carries a larger L3 cache of 6 MB per core compared to the GT 30 Pro's 4 MB, which helps the CPU fetch frequently used data faster and reduces latency in demanding applications. Taken together, the Poco X7 Pro holds a clear and consistent performance advantage in this category — the GT 30 Pro's faster RAM is a genuine bright spot, but it is not enough to offset the Dimensity 8400's broader lead in CPU throughput, GPU architecture, and real-world benchmark results.