6800xt - Undervolt Settings Work

This guide covers how to safely undervolt your AMD Radeon RX 6800 XT to lower temperatures, reduce fan noise, and often improve performance (by allowing higher sustained boost clocks).

Run Time Spy Stress Test + 20 minutes of Cyberpunk’s built-in benchmark. If no crash, drop voltage by 10 mV and repeat. Stop at 1020 mV or first crash—then add back 15 mV for daily stability.

Adjust Voltage: Lower the voltage slider. Most 6800 XT cards are stable at 1050 mV, but "golden chips" can sometimes reach 950 mV or lower. 6800xt undervolt settings work

6. Real-World Benchmark Data (Average of 5 GPUs)

| Setting | Voltage | Max Core Temp | Power (Avg) | Time Spy Graphics | Relative Perf | |---------|---------|---------------|-------------|-------------------|----------------| | Stock Auto | 1150 mV | 78°C | 260W | 18,850 | 100% | | 1050 mV | 1050 mV | 69°C | 208W | 18,820 | 99.8% | | 1025 mV | 1025 mV | 64°C | 190W | 18,100 | 96% | | 1085 mV + OC | 1085 mV | 74°C | 252W | 19,500 | 103.5% |

Step 4: Fan Curve (Optional but Recommended)

Since you are generating less heat, you can run fans slower for a quieter PC, or keep them high for max cooling. This guide covers how to safely undervolt your

The Radeon RX 6800 XT, like many modern GPUs, uses a dynamic voltage and frequency scaling (DVFS) system to adjust its voltage and clock speeds based on workload demands. However, the default voltage settings can be quite high, leading to excessive power consumption and heat generation.

Lower Temperatures: Reduces GPU and junction "hotspot" temperatures by as much as Stop at 1020 mV or first crash—then add

to lower power consumption and temperatures while maintaining or even improving performance. The Sweet Spot: Typical 6800 XT Settings

Fan Curve: While in the tuning menu, set a custom fan curve to keep the junction temperature below 90°C for the best balance of noise and cooling. Expert Tips