At their core, both the Asus Prime RTX 5070 Ti OC Edition and the Gainward RTX 5070 Ti Phoenix-S share identical silicon foundations: the same 8960 shading units, 280 TMUs, 96 ROPs, and a base clock of 2295 MHz. Memory speed is also locked at 1750 MHz on both cards. This means the two GPUs are, at rest, drawing from the exact same well of raw hardware resources.
The real divergence lies in the boost clock. The Asus OC Edition pushes its turbo to 2497 MHz, while the Gainward Phoenix-S tops out at 2452 MHz — a difference of 45 MHz, or roughly 1.8%. Because derived throughput metrics scale directly with clock speed, this gap propagates across every performance figure: the Asus delivers 44.75 TFLOPS of floating-point performance versus 43.94 TFLOPS on the Gainward, and its texture rate of 699.2 GTexels/s edges out the Phoenix-S's 686.6 GTexels/s. In practice, a sub-2% clock advantage rarely translates into a perceptible frame rate difference in real games, but it does represent a consistent, measurable lead under sustained compute or rendering workloads.
The edge goes to the Asus Prime OC Edition, strictly on the basis of its higher factory boost clock and the slightly superior throughput numbers that follow from it. That said, the margin is narrow enough that thermal conditions, driver behavior, and power delivery in real-world scenarios could easily close the gap. Users prioritizing peak theoretical output will prefer the Asus; those indifferent to a ~1.8% clock delta will find the Gainward Phoenix-S functionally equivalent for virtually all practical purposes.