Here we present the average clock speed for each graphics card while running Cyberpunk 2077 for 30 minutes. We use GPU-Z to record the GPU core frequency during gameplay. We calculate the average core frequency during the 30 minute run to present here.
The reason we saw such similar gaming performance from both RX 6600 XTs is because the operating clock speeds are almost identical. Over our 30 minute stress test, the Gaming OC Pro averaged 2610MHz, compared to 2605MHz for the Sapphire Pulse.
We can see how similar the clock speed behaviour is in the above scatter chart. We've deliberately truncated this, so the range shows between just 2500-2700MHz, to give you a better look at how closely the frequency plots overlap.