On the RX 9070 XT, you normally can’t directly control the clock speed.
The only option is increasing the Max Frequency Offset, which means the clock will only go higher if the card actually reaches its frequency/voltage ceiling.
Starting from driver version 25.10.2 and newer, I noticed some unusual behavior.
In some DX12 games (not all of them), and especially in Fortnite Performance Mode, the GPU pushes itself very aggressively:
Nearly 100% GPU usage
Around 3350–3400MHz
About 1140mV
This happens even with an FPS cap set to 180, which seemed odd.
Since I noticed the card was already operating close to its limits, I decided to increase the Max Frequency Offset just to see how far the boost clock could be pushed.
The results were quite impressive:
I managed to reach ~3760MHz without a crash
When I tried 3800MHz, the driver crashed
My assumption is that this was possible because the GPU wasn’t under a true full power load — it was only drawing around 210W out of a 340W limit.
Because of the extra power headroom, the card was able to hold such a high clock without immediately crashing.
I know this is probably not stable for a long gaming session, but still, I think the result is pretty interesting.
I also tried increasing the frequency offset in benchmarks and heavier games (Cyberpunk, 3DMark Steel Nomad), but it didn’t make any difference — the clock didn’t increase at all.
The only thing that helped there was undervolting, which slightly increases the clock speed.