The silicon gap between these two phones is substantial. The Infinix Hot 60i 5G runs on the MediaTek Dimensity 6400, built on a modern 6 nm process, while the Redmi 15C 4G uses the MediaTek Helio G81 Ultra on an older 12 nm node. A smaller fabrication process is not just a technical footnote — it directly translates to better power efficiency and thermal management, meaning the Infinix can sustain performance longer under load without heating up as quickly or draining the battery as fast.
The CPU and memory advantages compound this lead further. The Infinix's cores clock up to 2.5 GHz on its performance cluster versus the Redmi's peak of 2 GHz, and its RAM runs at 2133 MHz compared to 1800 MHz — resulting in a noticeably higher memory bandwidth of 17.1 GB/s versus 13.41 GB/s. Faster memory bandwidth means the processor can feed data to the CPU and GPU more quickly, which shows up in snappier app launches and smoother multitasking. The Infinix also doubles the RAM at 8 GB versus 4 GB, which is arguably the single most impactful real-world spec here — more RAM means more apps stay resident in memory, fewer reloads, and a noticeably more fluid day-to-day experience.
The Infinix Hot 60i 5G wins this category decisively across every meaningful dimension — newer architecture, faster clocks, superior memory speed, and double the RAM. Users who care about sustained app performance, gaming, or heavy multitasking will find the Redmi 15C 4G clearly outpaced.