Because of the "silicon lottery," every card responds differently. However, these are the most common stable starting points: Profile Type Max Frequency VRAM / Timings 2350 - 2400 MHz 1050 - 1075 mV Stock / Default Balanced (Sweet Spot) 2400 - 2500 MHz 1020 - 1035 mV 2100 MHz / Fast Timings Extreme (High Performance) 980 - 1010 mV 2150 MHz / Fast Timings
Lower the maximum voltage from 1150+ to 1050mV . Set Frequency: Set your maximum GPU clock to 2450MHz . Increase Power Limit: Move this to +15% .
The AMD Radeon RX 6800 XT is a powerhouse of a graphics card, but out of the box, it often runs hotter and draws more power than necessary. Graphics manufacturers typically apply a generous voltage buffer to ensure every single chip passes quality control. For the end user, this leaves massive optimization potential on the table.
To ensure your settings continue to perform well over time, please tell me: 6800xt undervolt settings work
: If your screen flickers or the PC restarts, the voltage is too low. The AMD driver will usually reset to default. Simply increase the voltage by 5–10 mV and re-test.
to prevent the card from throttling during transient spikes. Step-by-Step Guide to Applying Settings
Find the "Voltage (mV)" setting. Start by lowering the maximum voltage by 50mV–100mV. Because of the "silicon lottery," every card responds
The is widely considered one of the best cards for undervolting due to its high efficiency gains with minimal performance loss. By lowering the voltage, you can reduce power draw by up to 50–80W , significantly lower temperatures (often by 10–15°C), and achieve quieter operation without sacrificing frame rates. Recommended Settings for the 6800 XT
To avoid this, after each undervolt. Compare your graphics score to your stock baseline. If your score has dropped despite reporting higher clocks, you have found a clock-stretching setting and need to raise the voltage slightly.
Keeping the minimum frequency within 100–150 MHz of the maximum frequency stabilizes the clock state transitions, preventing aggressive micro-stutters. Increasing the power limit gives the card headroom to maintain these clocks, while the 1075 mV cap keeps heat in check. 2. The Aggressive Sweet Spot Settings (70% Success Rate) Increase Power Limit: Move this to +15%
AMD’s software is the best starting point for most users.
Increase the slider to the maximum allowed value (+15%). This setting does not force the card to draw more power; it merely prevents the power limiter from artificially throttling clock speeds when the GPU is under load. Turn on Fast Timing under VRAM tuning for free memory latency improvements. Stress Testing and Validation