Overclocking ASUS TUF Gaming GeForce RTX 3080 Ti OC Edition
Default
Before we find the highest stable overclock, we need to find out what the default GPU clock speed of the video card is. With both NVIDIA and AMD GPUs, the GPU frequency is dynamic. NVIDIA has GPU Boost, and AMD has its Game Clock and Boost Clock quoted frequencies. Typically, GPUs today can exceed the “Boost Clock” dynamically. We need to find out what it actually runs at in-game, so we can compare the benefit of overclocking. To do this we will record the GPU clock frequency over time while playing a game. We use Cyberpunk 2077 for this with a very long manual run-through at “Ultra” settings recording GPU-Z sensor data.
The factory overclock of this video card is 1755MHz, indicated by the green line on the graph. You can see that thanks to NVIDIA GPU Boost the video card is boosting well above the factory overclock, our is stabilizing between 1845MHz-1860MHz while gaming. That’s about 95MHz above the factory clock, on average, and about 180MHz over the reference spec.
Overclocked
To overclock the ASUS TUF Gaming GeForce RTX 3080 Ti OC Edition, we are using the manufacturer-provided overclocking software which in this case is GPU Tweak III. This is our highest stable overclock shown below.
In GPU Tweak III, on this video card, we can increase the Power Target by 7% to 107%, giving us a little headroom on the TDP. We can also increase the fan speed and GPU Voltage. For our overclock we managed to hit a higher boost clock of 1900MHz versus the default 1755MHz setting. On the memory we were able to increase that up to 20GHz from the default 19GHz, bringing it up 1GHz.
At 1900MHz GPU Boost, the actual frequency we got was between 1905MHz-1935MHz while gaming. This is a decent boost over the default frequency, about a 70MHz overclock roughly, on average, or 4-5% higher GPU frequency.