Increase to +15% ; this sounds counterintuitive, but it prevents the card from throttling and allows the undervolt to stay stable during spikes. How to Apply the Undervolt
You cannot ignore memory tuning when asking if undervolt settings work. The Infinity Cache on the 6800XT loves low latency. 6800xt undervolt settings work
Enable VRAM Tuning . Switch timing to Fast Timing and bump the max frequency to 2100 MHz . Increase to +15% ; this sounds counterintuitive, but
) for 15–30 minutes. If it crashes, increase the voltage by 10 mV and try again. Why Undervolt? Enable VRAM Tuning
(e.g., Cyberpunk 2077, Metro Exodus, or Alan Wake 2) for real-world validation. Step 2: Navigate to Radeon Software
Performance stays within 1% to 2% of stock values, or slightly improves due to consistent clock speeds. If you want to fine-tune your card further, let me know:
Right-click your desktop, open , and navigate to Performance > Tuning . Switch the Tuning Control from Automatic to Custom . Toggle GPU Tuning and Advanced Control to "Enabled." Step 4: Drop the Voltage Incrementally