Both cards share the same 2407 MHz base clock, identical shader counts (4608 shading units), and the same memory speed, ROPs, and TMU configuration — meaning their architectural foundations are equivalent. The real differentiator in this group is the boost clock: the Gainward PythoN III OC sustains a GPU turbo of 2662 MHz, compared to the Gigabyte WindForce OC's 2587 MHz — a gap of 75 MHz, or roughly 3%. In practice, a higher sustained boost clock means the Gainward card maintains peak throughput for longer under sustained loads, which translates to slightly more consistent frame rates in GPU-bound scenarios.
That clock advantage flows directly into the compute and throughput metrics. The Gainward delivers 24.53 TFLOPS of floating-point performance versus 23.84 TFLOPS for the Gigabyte, and its texture fill rate of 383.3 GTexels/s versus 372.5 GTexels/s means it can process textured geometry slightly faster — a meaningful edge in heavily textured or high-resolution scenes. The pixel fill rate gap (127.8 vs 124.2 GPixel/s) similarly favors the Gainward, particularly at higher resolutions where the ROP pipeline becomes a bottleneck.
Overall, the Gainward PythoN III OC holds a clear, if modest, performance edge in this group. The differences stem entirely from its higher factory boost clock — every downstream throughput metric reflects it consistently. For users who prioritize peak and sustained compute performance out of the box, the Gainward has the advantage. The Gigabyte WindForce OC is not far behind, but on raw numbers alone, it cannot match the Gainward's clock-driven throughput lead.