6800xt Undervolt Settings Work – Official

April 12, 2026 Subject: Validation of Undervolt Settings for RX 6800 XT (Navi 21)

Change the Voltage slider from 1150 mV to 1050 mV .

A settings profile is only successful if it can handle transitions between low, medium, and high loads. 6800xt undervolt settings work

Overclocking VRAM adds heat to the memory controller. If you undervolt too aggressively (sub 1050mV) AND use Fast Timings at 2150Mhz, you will get "memory correction errors" (lower FPS despite higher clock).

Undervolting the AMD Radeon RX 6800 XT reduces power draw and temperatures while often keeping near-stock performance. Aim: improve efficiency (higher performance-per-watt) and thermals with stable settings for typical silicon. Results vary by card, cooler, and workload. April 12, 2026 Subject: Validation of Undervolt Settings

A “100% stable” undervolt in benchmarks often crashes within 10 minutes of ray-traced gaming. For daily use, back off 15–20 mV from your lowest benchmark-stable voltage.

The AMD Radeon RX 6800 XT is a performance beast, but out of the box, it often runs hot and pulls significant power, leading to loud fans and potentially thermal throttling. —reducing the voltage supplied to the GPU while maintaining or increasing clock speeds—is a popular technique to combat this. If you undervolt too aggressively (sub 1050mV) AND

If you’d like, I can:

Enable Memory Tuning, select Advanced Control , and set the max frequency to 2100 MHz with Fast Timing enabled.

The best tool for this is the official AMD Adrenalin software. Open Adrenalin, go to the tab, then Tuning . Set Tuning Control to Manual .