Both the Hellhound and the Red Devil are built on identical GPU silicon — the same 3584 shading units, 224 TMUs, and 128 ROPs — meaning any performance difference between them comes entirely from factory clock speeds, not architectural distinction. This is a classic base-vs-premium tier comparison within the same product family.
That distinction matters, because the Red Devil does carry a consistent clock speed advantage across the board. Its 2700 MHz boost clock versus the Hellhound's 2590 MHz translates directly into higher derived metrics: the Red Devil delivers 38.71 TFLOPS of floating-point throughput compared to 37.13 TFLOPS, and its texture rate of 604.8 GTexels/s edges out the Hellhound's 580.2 GTexels/s. In practice, a ~4% clock advantage like this typically produces a similarly modest but real improvement in frame rates and compute workloads — enough to be measurable in benchmarks, though unlikely to be dramatic in day-to-day gaming at equivalent settings. Memory speed is identical at 2518 MHz, so bandwidth is not a differentiator.
The Red Devil holds a clear, if moderate, performance edge in this group, driven purely by its higher factory overclock. For users who want every frame the hardware can offer without manual tuning, the Red Devil is the stronger choice. The Hellhound, sharing the exact same core configuration, remains competitive and the gap is narrow enough that real-world experience will feel very similar in most scenarios.