: If your PC crashes or the driver resets, increase the voltage by 10 mV and test again. Key Benefits of Undervolting GPU Overclock & Undervolt Radeon 6800XT
: Lower temperatures (often by 5–10°C), reduced fan noise, and improved longevity.
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
Synthetics load the GPU uniformly, but games feature variable loads that stress the voltage regulators during sudden transitions (e.g., opening a menu or loading a new zone). 6800xt undervolt settings work
[Apply Settings] ➔ [3DMark Time Spy Stress Test (20 Runs)] ➔ [Heavy Ray Tracing Game] ➔ [Older DX11 Title]
can significantly reduce power consumption by up to and drop junction temperatures by 20–30°C with negligible performance loss . While every card is unique due to the "silicon lottery," most stable undervolts for this card fall between 1025 mV and 1075 mV . Recommended "Sweet Spot" Settings
Setting this to 2400–2450 MHz is a common stable range for a daily undervolt. : If your PC crashes or the driver
Start by dropping your voltage from the stock 1150 mV down to . Set your maximum frequency to 2400 MHz and minimum frequency to 2300 MHz . Keeping the min and max frequencies within 100 MHz of each other stabilizes the clock states, preventing aggressive downclocking stutter. Step 4: Increase the Power Limit
Undervolting an RX 6800 XT typically yields lower temperatures, reduced power consumption, and quieter operation with minimal performance loss
| Step | Action | Tool | |------|--------|------| | 1 | Set fan curve to aggressive (or custom) | AMD Software: Adrenalin | | 2 | Reduce voltage from 1150 mV → 1050 mV | Performance → Tuning → Manual → Undervolt | | 3 | Leave frequency at default (max ~2310–2410 MHz) | Same panel | | 4 | Increase Power Limit to +15% (optional but safe) | Same panel | | 5 | Test stability: Time Spy, Superposition, Cyberpunk 2077, or Port Royal | 3DMark / Game stress test | However, these are the most common stable starting
Avoid running MSI Afterburner simultaneously with AMD Adrenalin software for voltage control. They will fight for hardware hooks and cause resets. Use one or the other.
The most immediate proof of a working undervolt is a drop in power consumption. A stock RX 6800 XT typically draws around 280 to 300 Watts under full load.
To undervolt, use the under the "Performance" > "Tuning" tab. Recommended Value Voltage 1025 mV – 1075 mV Stock is usually 1150 mV. Try dropping in 25 mV increments. Max Frequency 2300 – 2450 MHz
Undervolting—the process of reducing the voltage supplied to the GPU while maintaining its clock speeds—is the most effective way to optimize this card. Here is a comprehensive look at how 6800 XT undervolt settings work, what results you can expect, and how to find the perfect balance for your rig. Why Undervolting the 6800 XT Works
Run 3DMark Time Spy or Unigine Superposition three times back-to-back. Note your maximum junction (hotspot) temperature and average clock speed.
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