If you want to skip the guesswork and go straight to settings that "just work" for daily gaming (24/7 stability), the community has narrowed down a specific voltage range for the Navi 21 GPU.

Let’s look at data from a standard reference 6800XT running Call of Duty: Modern Warfare II at 1440p Ultra.

If you encounter these issues while playing demanding modern titles, simply open AMD Software and raise your voltage by . Conclusion: A Must-Do Tweak

For a balanced profile that preserves stock performance while maximizing efficiency, try these baseline manual settings in the :

Undervolting involves reducing the voltage supplied to your GPU while keeping the clock speeds the same (or even increasing them). It's the opposite of overclocking in spirit, though the two can be combined. The benefits are significant:

: Change Tuning Control to Manual and enable GPU Tuning , Advanced Control , and Voltage .

: Go to Performance > Tuning . Change the Tuning Preset to Manual . GPU Tuning : Enable GPU Tuning and Advanced Control .

The AMD Radeon RX 6800 XT, built on the RDNA 2 architecture, remains a beloved GPU for its potent 1440p and entry-level 4K gaming performance. However, like many high-performance cards, its default "out-of-the-box" settings are engineered for stability above all else. This conservative approach results in excessive voltage being fed to the GPU core, leading to higher temperatures, increased fan noise, and reduced power headroom for performance boosting. The most effective solution to unlock the card's true potential is not overclocking, but rather a carefully tuned undervolt. For the RX 6800 XT, a stable undervolt in the range of (down from the stock ~1150-1200 mV) reliably works to deliver a cooler, quieter, and often faster gaming experience.