6800xt Undervolt Settings Work 〈99% LEGIT〉

: 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.

| Setting | Value | Rationale | | :--- | :--- | :--- | | | Enabled | Unlocks manual control. | | Min Frequency (Mhz) | 2300 | Prevents clock dropping too low. | | Max Frequency (Mhz) | 2450 | Sweet spot for thermal efficiency. | | Voltage (mV) | 1075 | The magic number. (Start here). | | VRAM Tuning | Enabled (Fast Timing) | Free performance. | | VRAM Max Frequency | 2110 Mhz | Stable for 90% of Samsung/ Micron dies. | | Power Limit (%) | +5% or +10% | Gives headroom for voltage dips. | | Fan Tuning | Enabled (Advanced) | 40% baseline, 70% at 80°C. | 6800xt undervolt settings work

: A setting that is stable in standard games might crash in Ray Tracing titles. If you play games like Metro Exodus Enhanced Edition , you may need to add +10 mV to your stable "flat" undervolt. : If your screen flickers or the PC

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 | Setting | Value | Rationale | |

These settings are widely reported as stable across most 6800 XT models (including reference, Sapphire Nitro+, and PowerColor Red Devil). They offer a significant drop in temperature with minimal risk of crashing.