6800xt — Undervolt Settings Work
+15% (This gives the card headroom to boost higher using the power saved from undervolting) Step-by-Step Guide to Undervolting Your 6800 XT
AMD Adrenalin allows you to save per-game profiles. Use this feature. Do not force a 1040mV profile on Returnal ; it will crash on the title screen.
Fast Timing enabled, Max Frequency at 2110 MHz Power Limit: +15% Step-by-Step Tuning Guide
The AMD Radeon RX 6800 XT is a powerhouse graphics card, but out of the box, it often draws more power and runs hotter than necessary. Graphics card manufacturers apply a high default voltage to ensure stability across every single chip produced. However, this means your specific card is likely receiving more power than it actually needs to run at peak performance. 6800xt undervolt settings work
| 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. |
I can give you a more specific starting point based on your exact hardware setup. Share public link
You need a reliable way to test stability and log your baseline metrics. Download or Superposition , alongside HWMonitor or HWInfo64 to track temperatures. Step 2: Establish a Baseline +15% (This gives the card headroom to boost
At stock settings, the RX 6800 XT is a thermal and power juggernaut, typically consuming over 250 watts under load. The core voltage is set high to guarantee stability across the wide silicon lottery. By using AMD’s Adrenalin software to manually lower the voltage-frequency curve, users can dramatically reduce power draw. A successful undervolt to, for example, while maintaining the stock frequency of approximately 2450 MHz typically cuts power consumption by 40-60 watts. The immediate benefits are lower operating temperatures—often a 5-10°C reduction in junction (hotspot) temperature. This thermal headroom prevents the GPU fans from ramping to intrusive levels, resulting in a near-silent gaming build.
Undervolting creates a unique stability curve. A card might be stable in Cyberpunk 2077 for an hour but crash instantly in Furmark or Superposition .
Look at the GPU Tuning section. You will see a slider or input box for . Drop this value from the stock 1150 mV down to 1075 mV as a safe first step. Keep your Max Frequency at the stock value (usually around 2300-2400 MHz depending on your specific card model). Step 4: Adjust Power Limit Fast Timing enabled, Max Frequency at 2110 MHz
Let’s look at data from a standard reference 6800XT running Call of Duty: Modern Warfare II at 1440p Ultra.
If you want to fine-tune your specific card further, let me know:
Run 3DMark Time Spy or FurMark for 30 minutes.
This lowers your electric bill and reduces heat output into your room.