The generational chip gap here is substantial. The Pixel 10 runs on the Tensor G5 built on a 3 nm process, while the Pixel 9a uses the Tensor G4 at 4 nm. That one nanometer difference in fabrication node is not merely a marketing figure — a smaller process typically yields better power efficiency and thermal headroom, allowing the chip to sustain higher performance for longer before throttling. The Pixel 10's CPU also runs faster at its peak core (3.4 GHz vs 3.1 GHz), and its benchmark scores confirm the real-world gap: a Geekbench 6 single-core score of 2267 versus 1600 on the Pixel 9a, and a multi-core result of 5712 versus 4500. The AnTuTu gap is even wider — 1,414,900 versus 1,071,616 — a roughly 32% lead that reflects meaningful differences in compute-intensive tasks like AI processing, photo rendering, and sustained gaming loads.
RAM is the other key differentiator. The Pixel 10 ships with 12 GB of RAM compared to the Pixel 9a's 8 GB. In practice, more RAM means more apps can stay active in the background without being killed, smoother multitasking, and better headroom for on-device AI features that load large models into memory. Both phones share 256 GB of internal storage and use DDR5 memory at the same speed, so the advantage is purely in capacity. On the GPU side, the Pixel 10's PowerVR DXT 48 running at 1100 MHz outclocks the Pixel 9a's Mali-G715 MP7 at 940 MHz, giving it an edge in graphics-intensive workloads.
Across every meaningful performance dimension — CPU speed, benchmark scores, RAM, GPU clock, and process efficiency — the Pixel 10 holds a decisive advantage. The Pixel 9a is no slouch for everyday tasks, but users who push their phones with demanding applications, multitasking, or future-proofing in mind will find the Pixel 10 in a clearly higher tier.