Use the Radeon Software Curve Editor or Afterburner voltage/frequency control. This method assumes you want to keep similar clocks with lower voltage.
It's common to encounter issues when undervolting. Here’s how to diagnose and fix them.
What is the of your 6800 XT (e.g., Reference, MSI Gaming X, Sapphire Nitro+)? What are your current idle and gaming hotspot temperatures ?
For 90% of RX 6800 XT owners, setting the and the Max Frequency to 2400 MHz is the magic combination. It transforms the card from a hot, loud beast into a cool, efficient gaming machine without sacrificing a single frame of performance. 6800xt undervolt settings work
Increase the Power Limit slider to +5% . This prevents the card from throttling during intense rendering spikes.
Eliminating thermal throttling allows for smoother frame times and fewer micro-stutters during extended gaming sessions. Understanding the "Silicon Lottery"
Table data based on community tested configurations. Use the Radeon Software Curve Editor or Afterburner
If your core temp is 65°C but your Hot Spot reads 95°C+ (a delta of over 30°C), your graphics card likely has poor thermal paste application or uneven mounting pressure. Undervolting helps mitigate this, but hardware maintenance may be required for a permanent fix.
If your system crashes or the driver resets during any of these phases, go back into Adrenalin and (e.g., from 1050 mV to 1060 mV). Repeat the testing until you achieve rock-solid stability. Expected Results and Thermal Impact
Undervolting your 6800 XT is one of the best ways to get better performance, lower temperatures, and higher efficiency in 2026. By setting your voltage to roughly and managing your fan curves, you can keep this card competitive for years to come. Here’s how to diagnose and fix them
Because of the "silicon lottery," every card is slightly different, but most 6800 XT owners find stability within these ranges: Standard Stable Range Performance-Focused UV 1050 mV – 1100 mV 1015 mV – 1040 mV Min Frequency 2300 MHz – 2400 MHz 2400 MHz – 2500 MHz Max Frequency 2400 MHz – 2500 MHz 2600 MHz – 2700 MHz VRAM Clock 2000 MHz – 2100 MHz 2100 MHz – 2150 MHz VRAM Timing Fast Timings Power Limit 0% to +15% Step-by-Step Configuration Guide
Test the safe profile in demanding titles that utilize heavy ray tracing or high GPU compute loads, such as Cyberpunk 2077 , Metro Exodus , or Alan Wake 2 . Play for at least two hours to confirm long-term stability. Troubleshooting Common Issues Settings Reset After Reboot
As you can see, the undervolted settings result in similar performance, but with significantly reduced power consumption and temperatures.