Overclocking
AMD has once again changed the UI for overclocking in Radeon Settings; I feel it's slightly improved. There are a few very minor bugs that will be fixed in no time, I'm sure.
Just like on previous cards, slider lengths limit overclocking potential. While this is no problem for the GPU clock, memory overclocking basically means "drag the slider to its maximum and be done." Unlike the RX 6800 XT, which absolutely needs an increase in its power limit to show OC gains, the RX 6800 has no such problems. Dialing up clocks immediately results in performance gains.
While there is a voltage adjustment slider in Radeon Settings, it only lets you undervolt the card, which can still be useful.
Testing notes & interpretation- Overclocking results listed in this section are achieved with the default fan, power, and voltage settings as defined in the VGA BIOS. We choose this approach as it is the most realistic scenario for most users.
- Each GPU (including each GPU of the same make and model) will overclock slightly differently based on random production variances.
- The data in this table shows comparable overclocks, using identical conditions, from previous TechPowerUp reviews.
Using these clock frequencies, we ran a quick test of Unigine Heaven to evaluate the gains from overclocking.
Actual 3D performance gained from overclocking is 9.1%.